Blues jr schematic Blues junior hoffman reverb circuit board conversion solid idea pc cut state take original el34world Blues Jr Iii Schematic. all 50m pgs power ioov wiring export power 240v wring checked by: date: approved rev. Junior wired reverb circuit slightlyBlues schematic jr footswitch fender led simple. Quick fender blues jr schematic question Blues jr fender mod junior tone follower input section cathodeFender blues And a more or less copy of the schematic, but I couln’t fin a real one. 6VDCtoo hot for the given plate and screen voltages, IMO. Two side notes: Doug's schematic doesn't highlight the fact that Sven has paralleled the two triodes in V2 without changing plate or cathode resistors. 01uf cap that was suggested to be removed, not the . Level 5; Fender blues junior sch schematics preview pdf 1st manual service. Just tried the Blues jr version IV Humbolt Hot Rod today. Fender Musical Instruments Corp. OT. schematic. Hope this helps. Does anyone have a schematic and/or a parts list for the blues Jr? Got a bunch of Note that in my Blues junior design, I left those off without any problems A couple of the coupling caps on V1 were labelled as . The schematic shows the connections between the tubes and BLUES JUNIOR IV SIZE REV. The heart of the amplifier is the preamp section, which consists of two 12AX7 tubes. This project was brought on by having some BJ iron hanging around unused (a Mojo780 PT and an AllenAmps TO20B), and I want to learn more about cathode biasing. pdf), Text File (. – ampwaresHoffman blues junior conversion Blues junior fender après it11audioFender blues schematic jr question quick tdpri. Help with blues junior troubleshootingA mod for the fender blues jr. I got to say, it's the best sounding Blues Jr I've ever heard, including my friends with full on Bill M mods. I've seen the 90's/00's models come in I modded my Blues Jr, replaced many signal resistors with Kiwames, and did a lot of the typical things like replacing the main power cap C25 (Cream bd MIM) with F&T 100uf. Simple fender blues jr footswitch w/ led schematic Fender blues junior Fender troubleshooting bjr schem. . MUSICAL INSTRUMENTS Corona, CA U. They are both based off the Fender Blues Junior III drawings as Fender has kept the majority of the same component numbering for the BJ IV. Anybody have a schematic or components values with the changes? Best Regards! Top. AT PAN (OFF) 50. 1 049102 PANEL FRONT BLUES JUNIOR (CHROME PANEL I will use the following Blues jr. Save your money on the attenuator, and tweak the Blues Jrs' master volume and volume controls. Tubes are all new. Chassis replacedIt-11 audio » fender blues junior mods . I tried it with new tubes and 2 different speakers. I'm planning a build around a Hoffman Blues Junior, though with a cathode biased output section. 250 tab 100v cable assy pwr 220/240v cable assy pwr aust . 063x7/16 blk bushing sr. Blues junior to blues senior upgrade to point to pointHoffman blues junior conversion Fender schematics acoustasonic amps 221kBlues junior I just performed a Fromel Electronics Supreme Mod Kit modification to a Fender Blues Jr. 14 May 2024. Parts arrived on time, now installed and working fine. I have a Fender Blues jr (I believe a version II) and I did some mods, basically I will use the following Blues jr. Does anybody know what the deal is or does anybody have a rev level A, PR 295, Blues Jr. If the site has helped you and you also want to help others, please Upload a IT-11 Audio » Fender Blues Junior Mods. Reactions: tommytubetone. Blues junior fender iii eagle blue audiofanzine 2907 gentil maurice weight uploaded format size combo guitar amp tube Fender blues jr. inc" "potentiometer_standard. Blues junior mods fender circuit board green amps first amp rev 1995 tube prior appeared markings juniors 2001 test hadBlues jr rev a layout Blues junior schematic photo by tommy1drewFender blues jr. Quick fender blues jr schematic question Blues fender junior rev sch manual preview service pdf 1st schematics Fender blues junior iii image (#1690735) Fender blues junior service manual download, schematics, eeprom, repairBlues fender junior iii used amp Fender acoustasonic amps schematics 221kFender blues jr iii schematic. The two orange caps act as a filter to help remove some highs and that may help with some Our FENDER BLUES JUNIOR SCHEMATICS Service Manual provides the important servicing information and operating instructions you need to diagnose and repair your malfunctioning or failing unit. Modification du bias. 8 KB, 87 views) Last edited by J Luth; 10-21-2024, 06:53 PM. 1's On the schematic they are . OnlyMaster & to some extent treble affect noise volume. At low volumes I have no issues but when I bring the volume to Anyways here's my practice in reading a schematic. Download. We have 4 Fender Blues Junior manuals available for free PDF download: Service Manual, Operating Instructions Manual, Service Diagram, Owner's Manual . Don’t know if that helps. Included are the necessary libraries "Koren_Tubes. 5: Install a new set of Groove Tubes with the same rating as the old tubes (#4) and repeat the procedure. Blues jr fender mod junior tone follower input section cathode Hoffman Blues Junior Conversion. 03 Oct 2024. Chassis replaced Blues jr fender mod junior tone follower input section cathode. Blues Junior Mods — BB MADE. I tried wiring for Can the Q1 JFET on a Fender Blues Junior be substituted with either a J112 or a J113? I’ll admit it, I don’t know much about them. txt) or read online for free. Blues schematic jr footswitch fender led simpleFender blues jr. Blues junior fender iii eagle blue audiofanzine 2907 gentil maurice weight uploaded format size combo guitar amp tube. iii repair / mods Blues jr rev a layout It-11 audio » fender blues junior mods. This is a Blues Junior Rev A with a Rob 5F6a style bias circuit and with no reverb channel. importance of biasing Blues jr fender mod junior tone follower input section cathodeQuick fender blues jr schematic question. All trademarks, logos, and brand names are the property of their respective owners. I Google a bit and some techs won’t touch anymore. Fender Blues Junior Service Manual (21 pages) Brand: Fender Since 2008 a lot of info has been available on the internet revealing schematics and modifications to get the artist tones. The only way to remove them is to unsolder the wires on the back of the socket board Blues jr rev a layoutSimple fender blues jr footswitch w/ led schematic Fender blues jr vs blues deluxe vs hot rod deville etcBlues fender deville brightening bj. If you look at this schematic set (I believe these are all straight up Blues Jr (not III), and the first page is the made in USA board and the second page is made in Mexico) -- for example, C28 is not the same cap from schematic to schematic. Better than Amazon. Blues Junior Rev B; Blues Junior Rev D; Blues Junior III Rev B; Faceplate: Front: Power Sw, Pilot Lamp, Reverb, Master Vol, Mid, Bass, Treb, Fat Sw, Vol, In; Rear: None; I have a cream board Blues Jr. Fender blues junior iii > amps & preampsFender blues jr iii schematic Fender blues-junior sch service manual download, schematics, eepromUsed fender blues Blues Jr Iii Schematic. Fender blues junior rev sch manual preview service pdf 1st schematicsFender blues jr iii schematic Schematic for the blues jr ivFender blues-junior-sm service manual. ” I’ve been looking for it too. Is it possibly this one? Fender-Blues-Junior-III-Schematic-Rev-D. Joined 2010. I have a Blue Junior III 2010 (REVISION D I assume) and decided to install a Fromel kit, but have stuffed something! It powers on fine, light Our FENDER BLUES JUNIOR SCHEMATICS Service Manual provides the important servicing information and operating instructions you need to diagnose and repair your malfunctioning or failing unit. I was looking at the Blues Jr schematic. Check FENDER BLUES JUNIOR REV D SCH Service Manual download, schematics. Fender Blues Junior - Circuit Overview & Mods - YouTube. I traded for it used at a local guitar store. Most of our service manuals will include disassembly instructions, schematic diagrams, parts lists, exploded views, troubleshooting, wiring diagrams and Hoffman blues junior conversion. Joined Feb 7, 2008 Posts 609 Location Kingston, PA. Post Cancel. Fender blues junior nos image (#306361)Blues fender Attached is an LTspice model I created of a Blues Junior III Rev C 2003. Pulled V2, noise dissapeared. Upgrade knob for original Blues Junior, Bronco, and Pro Junior. crankin Have a Blues Jr 2006ish maybe with a cream board. III has a 4560 reverb IC. Of course I plugged it in and it worked just fine for me. Blues Junior Schematic Rev C 2003 LTspice Model. Blues junior fender amp tube audiofanzine 387k 1131 weight uploaded format size combo guitar medias Fender blues junior image (#222988) Blues junior troubleshooting schem bjr. 16. Blues jr fender mod junior tone follower input section cathode It-11 audio » fender blues junior mods Blues junior fender iii eagle blue audiofanzine 2907 gentil maurice weight uploaded format size combo guitar amp tube. bushing snap 5/16x17/32 blk bushing sr . Blues Junior Mods — BB MADE Check Details A recent customer comment: That went smoothly. The other is that Blues Jr. iii repair / mods. asy" . A mod for the fender blues jr. View and Download Fender Blues Junior instruction manual online. 11-25-2014, 01:27 PM. Anyone having a copy to post, especially in PDF format, would be greatly appreciated. Blues jr rev a layout. SERVICE MANUAL. A schematic Summary of Contents for Fender Blues-Junior III Page 2 I M P O R T A N T S A F E T Y I N S T R U C T I O N S ENGLISH - PAGES 6-7 The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to Fender schematics acoustasonic amps 221kFender blues schematic jr question quick tdpri Fender blues junior sch schematics preview pdf 1st manual serviceBlues junior fender après it11audio. Chaparral Road Suite 100 Scottsdale, AZ 85250. The Blues Jr comes in two designs: green circuit boards from 95 – early 2001 and cream colored boards from 2001 on. I kind of thought the 100uf cap for the bass was a bit too much myself but had to ask. iii repair / mods Chassis replaced. (green board), which has most of the well-known mods from Bill Machrone. Fender Blues Jr. Eileen Fritsch 12 Mar 2024. The schematic was done from a 240V export (AU) black tolex Blues Jr Iii Schematic. 01's Hoffman Amplifiers Tube Amp Forum, Blues Junior output transformer specs. I have installed these mods on another Blues Jr that had an upgraded Tone Tubby Fender blues jr schematic 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Model/Circuit Number: PR295 Production years: 1995-Present Era: Current configuration Fender Blues Jr Iii Schematic Blues Youngster: Packing tube-powered muscle to handle gigs and an affordable price tag, the Fender Blues Junior III combo is a compact solution for vintage tone, big sound,. My band I had a guy drop off a Blues Jr. Check Details. Pretty much every guitar amp design using EL84's runs them over datasheet spec. III Repair / Mods FENDER Blues Junior Schematic (PDF DOWNLOAD) CAN'T FIND WHAT YOU NEED? I have access to literally hundreds of thousands of Obsolete User Manuals, Lots of Repair Manuals, Service Manuals, Rare Schematic Blues Deluxe™ Reissue; Blues Junior™ IV; Blues Junior™ Lacquered Tweed; Hot Rod Deluxe™ IV; Hot Rod Deluxe™ 112 Enclosure; Hot Rod DeVille™ IV 212; Pro Junior™ IV; Mini-Amplifiers: Mini '57 Twin Amp; Mini Deluxe MD-20; Mini Tone Master; Mini Twin MT-10; Mustang Series: Mustang I™ Mustang™ GT Quick Start; Mustang™ GT 40/100 Fender Pro Junior Schematic. Fender blues-junior sch service manual download, schematics, eeprom Fender blues junior sch schematics preview pdf 1st manual service Junior wired reverb circuit slightly Hoffman blues junior conversion Fender blues junior sch schematics preview pdf 1st manual service Simple fender blues jr footswitch w/ led schematic Fender blues jr amplifiers rod modern hot Fender troubleshooting bjr schemBlues junior hand wired conversion with tube reverb A mod for the fender blues jr. But in the end I had to figure out how to read voltage and resistance on a multimeter. IT-11 Audio » Fender Blues Junior Mods. 1 gs. I figured if I could find a blues jr 3 Just a couple of discrepencies are: on the schematic, it lists R7 as being the VOLUME pot. We have all the power tubes and preamp tubes you will need for your amplifier. 062x37/64blk bushing sr . at a live performance that was one of the worst and harshest sounding amps I ever heard, which I was Fender blues jr. Our FENDER BLUES JUNIOR III SCHEMATICS Service Manual provides the important servicing information and operating instructions you need to diagnose and repair your malfunctioning or failing unit. It has the input going directly to the input of the first 12ax7 tube. I believe the V2 triode in question is the one shown all by itself on the schematic as V2-A, which appears to be unused so it may not be a problem after all but I’ve never seen anything Download FENDER BLUES JUNIOR service manual & repair info for electronics experts Service manuals, schematics, eproms for electrical technicians This site helps you to save the Earth from electronic waste! I finally finished a series of modifications on my Blues Junior and thought the group might be interested in my impressions. It's the tweed with the Jensen speaker. Does anyone know what's in the control? Thanks. TITLE: SERVICE DIAGRAM. BLUESJR - thetubestore BLUESJR Available below is a free download for the Fender Blues Junior tube guitar amp. I can’t source a J11 locally. Fender blues junior iii "blue eagle" image (#579210) Blues junior fender iii eagle blue audiofanzine 2907 gentil maurice weight uploaded format size combo guitar amp tube Chassis replaced Blues jr fender mod junior tone follower input section cathode IT-11 Audio » Fender Blues Junior Mods. 01uf cap would be okay to try. It is aimed at achieving the warm, tube-driven tone common in many styles of American Quick Fender Blues Jr Schematic Question | Telecaster Guitar Forum. Fender Blues Junior Service Manual - Free download as PDF File (. Junior fender ampli gagné punch indéniablement clarté it11audio It-11 audio » fender blues junior mods Blues junior fender iii eagle blue audiofanzine 2907 gentil maurice weight uploaded format size combo guitar amp tube. I have various Blues Jr I - III schematics and owners manuals. Please login or register. The Blues Junior is a tube guitar amplifier introduced in 1995 by the Fender Musical Instrument Corporation. All Class AB push-pull amps need a phase inverter that splits one sine wave signal into two signals with opposite phase that are fed into each power tube. The Layout Diagram, Schematic and BOM for this board are on this page: Click on the images to see a larger image: Here's the stripped out guts of a pro Junior" Note that the EL84 sockets are soldered in and screwed to the chassis. Via the FAT BLUES JUNIOR(REV A) Figure 1: The Blues Jr. LO is Lake Oswego most Fender serials start with year so 6 prob is 86 usa made. I purchased these for a Blues Jr III upgrade that didn't happen. Available below is a free download for the Fender Pro Junior tube guitar amp. How it Works Log In / Sign Up. Blues junior fender iii eagle blue audiofanzine 2907 gentil maurice weight uploaded format size combo guitar amp tube Junior fender ampli gagné punch indéniablement clarté it11audio A mod for the fender blues jr. I have a Blues Junior on the bench today and as you turn the volume above 2 or so it creates a sudden, awful distortion that overpowers any other sound. 9 KB · Views: 123 D. Fender Blues Junior Owner's Manual October 2019 80 Hi everyone. Blues Junior amplifier pdf manual download. Nathan. amps Check Details Blues junior fender diagram service pages. Posted on 12 May 2024. The kit essentially involved 4 Fender Blues Junior IV 1 x 12-inch 15-watt Tube Combo Amp - Black. Also R1 and R2's values are reversed. Le bias (= la Layout and Schematic - Hoffman Blues Junior Schematic and Layout PDF And would the rewiring of the ribbon cable follow the cream board diagram you've. Billm RIP. BLUES JUNIOR (REV A) Fender Title: FENDER. Blues junior fender iii eagle blue audiofanzine 2907 gentil maurice weight uploaded format size combo guitar amp tube It-11 audio » fender blues junior mods A mod for the fender blues jr. Components that were modified are highlighted. It-11 audio » fender blues junior mods. 2 DRAWING NUMBER SHEET: MINIWM. What I would appreciate is advice about where I went wrong with bass energy. Supporting Member. Maybe a . pdf Author: Paul Created Date: Also known: FENDER BLUES JUNIOR REV; If you have any question about repairing write your question to the Message board. 125x37/64 wht cable assy pwr w/. That's all well and good, but since you have an active circuit it got me thinking. You could try a 12AU7 in V2's spot. Fender pro junior sch service manual download, schematics, eeprom Fender blues junior manualsBlues junior fender diagram service pages Fender blue deluxe guitar amplifier sch service manual downloadBlues junior schematic fender troubleshooting help schematics. Do you have a question about the Fender Blues Junior III or do you need help? Ask your question here View and Download Fender Blues-Junior-III instruction manual online. The Fender Blues Junior schematic consists of several key components that work together to create the amplifier’s tone. djgibson51. I'm looking for the blues junior iv sib sl rear view are all capacitors 2. Fender pro juniorFender pro jr schematic A mod for the fender blues jr. Download & View Fender Blues Junior Schematic as PDF for free . My Files 0; My Downloads 0; History; Account Settings; Log Out; Buy Points; How it Works; FAQ; Contact Us; Questions and Suggestions; Users; Fender. JUST DO IT! PRR. Hoffman Amplifiers Tube Amp Forum, FX LOOP: Hoffman Fender Blues Junior Conversion. schematic as a baseline: Fender Blues jr. I played a blues jr 4 and it sounded great. Blues jr rev a layout Blues jr fender mod junior tone follower input section cathode. 0. Page 2 and 3 on the schematic. A tube amp needs the plate, gate, anode all at various voltages relative to each other. The input jack is at the top left of this schematic, and from Fender-Blues-Junior-IV-Rev-A-Schematic_V1. I've also got the schematic copied below. So far no luck in getting my hands on one. I think the older ones were built in USA and the newer ones with upgraded circuitry are built in Mexico. 2006) Ibanez RG321MH-MOL (ed. Tone stack and coupling caps have Blackface Princeton/Deluxe values (with mid pot as Fender blues jr amplifiers rod modern hot Quick fender blues jr schematic question Blues junior hand wired conversion with tube reverb It-11 audio » fender blues junior mods I’d love to get a copy of the IV’s schematic. You will find a large community of friendly amp builders at the link above. Help me find any mistakes? Jun 7, 2017 I want to add a Bill M presence control to my Blues Jr, but I can't find any schematics (for the control, not the amp). Each EL84 has it's own 270Ω cathode resistor, napkin-math says that should be a much more sane idle plate dissipation. Jazz P Bass. pdf64 Posts: 2835 Joined: Sat Mar Post by pdf64 » Sun Feb 20, 2022 11:15 am. It helps 'tame' the amp. S. Re: Hoffman Fender Blues Junior Conversion « Reply #17 on: May 28, 2022, 08:51:06 pm » One thing to know about Hoffman's layouts: the preamp ground is intended to be close to the input jack, with the ground bus connected there, NOT close to the Meat pot as it appears on the layout. Thread starter mchet; Start date Aug 6, 2008; This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others. The resistance was seriously mismatched between the 2 OT secondaries. If that information wasn't enough, techie folks from the Fender Discussion Page found from the Blues Jr's schematics that the amp, technically, will never breakup. Use our Shop by Amp tube packages to see popular tubes for this amp. Welcome To the Hoffman Amplifiers Forum January 20, 2025, 03:54:31 am: Welcome, Guest. Comment. Blues junior to blues senior upgrade to point to pointQuick fender blues jr schematic question Fender blues junior sch schematics preview pdf 1st manual serviceFender blues jr amplifiers rod modern hot. is a 2001 green board version and the OT secondaries have almost identical resistance. 08 Nov 2024. This manual comes under the category guitar amplifiers and has been rated by 1 people with an average of a 9. Loading B. iii repair / mods . File Type: pdf Categories: Amplifiers Tags: Fender Share this: Copy URL to clipboard. When I called MM to say I had a defective OT, they insisted it was a perfect clone of a Fender Blues Jr. pdf) or view presentation slides online. You're Reading a Free Preview Page 19 is not shown in this preview. Any thoughts? I will attach the schematic in the next post. Includes the Fender™ style 36620000 Black Chicken-Head knob and the 0033206049 bushing. D To be continued Comment. Joined Mar 26, 2008 Posts 2,227 Schematics/Service diagram Fender Musical Instruments Corp. On the board, it has R5 as the VOLUME pot and R7 is down by the ribbon cable that goes to V2. JR. 250 tab chs blues junior knob Blues Junior BillM DIY Upgrade Kit! Includes directions and Blues Jr III schematic. Bassman 200 sm; BASSMAN 250; Bassman 410 Pro; Bassman 410 Pro SL; Bassman 500 2; Blues Jr Iii Schematic. -User Name A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. It's all about the bass. lib" and "potentiometer_standard. Fender blues junior iii "blue eagle" image (#579210) Blues jr rev a layout Blues junior fender iii eagle blue audiofanzine 2907 gentil maurice weight uploaded format size combo guitar amp tube. pdf - Free download as PDF File (. I usually play with the master at about 10 and the volume around 1-2 for home use. 01uf cap. 7C0BFE0E-C987-4B7B-8707-26D4D39C000E by capndenny, on Flickr . Chassis replaced. . From what I understand the circuitry is the same in all Blues Jr's (depending on if you have a older one or an newer one). Schematics/Service diagram. iiiFender blues jr schematic Unveiling the inner workings of the blues jr: schematic breakdownThe ultimate guide to understanding the fender blues jr schematic. Junior fender ampli gagné punch indéniablement clarté it11audio A mod for the fender blues jr. iv. There were two resistors noticeably fried - see pic I measured B+ at 350 after I replaced these and R47 burned up again. On the new ones, they are indeed converted to cathode-bias operation. Post I need the current new C revision schematic for my new Blues Junior. Welcome To the Hoffman Amplifiers Forum January 20, 2025, 10:16:15 pm: Welcome, Guest. Junior hoffman pro layout tube amp blues schematic jr conversion build schematics file bom info el34world. Apprentice. Fender blues schematic jr question quick tdpriJunior hoffman pro layout tube amp blues schematic jr conversion build schematics file bom info el34world Blues junior fender après it11audioFender blues-junior sch service manual download, schematics, eeprom. Member. mchet Tele-Holic. 31 Aug 2024. Blues jr rev a layoutJunior hoffman pro layout tube amp blues schematic jr conversion build schematics file bom info el34world Blues junior hoffman reverb circuit board conversion solid idea pc cut state take original el34worldQuick fender blues jr schematic question. pdf Fender Blues Jr Schematic. By familiarizing yourself with the various The schematics on this website are not created by us, but rather were sourced from other websites and forums on the internet. Fender Created Date: 12/9/2010 9:29:57 AM Fender pro junior modificationFender pro jr schematic Blues fender jr output mod sectionBlues fender junior circuit mods. For this no need registration. My Blues Jr was an older model. Figure 1 is an annotated schematic of the Fender Blues Junior. Blues Jr Rev A Layout | Telecaster Guitar Forum. Even I in all my amp wizardness can not fix an amp that ain't broke. Fender blues junior schematic – electronic service manualsHelp with blues junior troubleshooting Junior hoffman pro layout tube amp blues schematic jr conversion build schematics file board bom info el34worldBlues junior hand wired conversion with tube reverb. drawing number sheet: date: database e ncr: file: size notes: noted) release date: created date: I've got the Blues Jr NOS. iii repair / mods Fender blues junior iii "blue eagle" image (#579210) Ce Fender Blues Junior date de 2003 (MIM cream board) et donc, je vais utiliser les pages 2 et 3 de ce document : Blues_Junior_Schematic. Fender_blues_jr. Secondly, I am in a conflict Layout and Schematic - Hoffman Blues Junior Schematic and Layout PDF - Newest version uploaded on 04/14/2015 BOM - Parts list - Blues Junior BOM PDF Hoffman Board install instructions That’s the thing, the only schematic I can find online is for the BJ3 and earlier. 6. This is great news for all current and future Fender Blues Jr owner’s! I believe the two or three modern versions of the Blues Junior (made in last 20 years) is the best trade off Fender Blues Junior front view. Don't wait to be asked. Level 1; Posts: 38; Blues JR Versions vs schematics « on: February 03, 2022, 09:13:47 am Fender Blues Junior Schematic - Free download as PDF File (. On my workbench is an early, US made Fender Blues Jr. Back when tubes were military grade, you could kinda get away with this, but tube quality has gone down, and many designs remain unchanged. 500x. This manual is available in the following languages: English. The Fender Blues Junior is a Junior fender ampli gagné punch indéniablement clarté it11audio A mod for the fender blues jr. (@ V4,5) 2 018022 BUSHING SNAP 5/16X17/32 BLK (@ OUTPUT TRANSFORMER) Simple fender blues jr footswitch w/ led schematicBlues junior fender après it11audio Quick fender blues jr schematic questionFender blues-junior sch service manual download, schematics, eeprom. 2018-03-01 6:22 pm #2 2018-03-01 6:22 Hoffman Amplifiers Tube Amp Forum, Fender blues junior bias adjustment. My amp is the old version; I got it in 1997. zip. JUST DO IT! Paul1453. PapaBear Guit Fiddlier. Chassis replaced Blues junior fender iii eagle blue audiofanzine 2907 gentil maurice weight uploaded format size combo guitar amp tube Junior fender ampli gagné punch indéniablement clarté it11audio. Highlighted parts have been modified in some way for this project. Well, the Blues Junior IV seems to have moved to cathode bias, so maybe the Pro Junior has too? No schematics for either seem to have found their way into the public domain. III Repair / Mods Check Details IT-11 Audio » Fender Blues Junior Mods Check Details Blues Junior Mods — BB The Blues Junior IV schematic features a simple yet effective design that captures the essence of vintage blues tones. PDF Author: DLH Created Date: 12/5/2006 11:08:35 AM Author Topic: Blues JR Versions vs schematics (Read 2442 times) 0 Members and 1 Guest are viewing this topic. View and Download Fender Blues Junior service diagram online. One of the central elements is the power supply section, which provides the necessary voltage and current to power the Fender_Blues Junior PR 295 - Service Manual. 2012) BluesJr 1996-B + cathode follower + texas Heat Crate CPB150 Homemade 4 x 10 cab Bass closeback This RevA schematic, cream board 2003. BLUES JUNIOR SERVICE MANUAL 1 049307 CHS ASSY BLUES JUNIOR 120V (COMLETE CHASSIS) 1 047560 BRACKET TUBE RETAINER PRO. Please login or A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Schematic Rev. Mine is the newer one. The original Blues Jr schematic has a . Check Details Hi guys. Feb 11, 2019 I once observed a guy playing a Blues Jr. A Mod for the Fender Blues Jr. Ibanez SA120 (ed. Fender blues junior sch schematics preview pdf 1st manual service There's a good thread on TPDRI when you google "blues junior 4 schematic" that has a detailed changelog vs the III. pdf (561. These tubes are responsible for amplifying the guitar signal and shaping its tone. Fender blues junior iii reviewUser manual fender blues junior iv (english The ultimate guide to understanding the fender blues jr schematicBlues fender junior circuit mods. Only one I can find is for older Green Board and all component numbers are different. This opens the window to have special instrument tones in If you want longevity DONT get an EL84 amp. Welcome To the Hoffman Amplifiers Forum January 22, 2025, 04:18:38 am: Welcome, Guest. I have managed to do a schematic and PCB layout for a Fender Blues Junior IV. SX; EXPORT POWER XFMR 100V WIRING EXPORT POWER 230V WIRING EXPORT POWER XFMR 240V WIRING sov CHECKED BY: DATE: APPROVED BY: SERVICE DIAGRAM, View and Download Fender BLUES JUNIOR service manual online. schematic? Any help is appreciated. V1B is the first gain stage which also contains the "FAT" switch. Blues Jr Iii Schematic. BLUES JUNIOR. Created Date: 3/5/2006 7:46:17 PM Mar 25, 2021 — Please check fender blues jr schematic and service manual of iridium to deliver amp mods very Blues junior iii manual fender blues jr. Aug 6, 2008 #1 ; M. Mar 3, 2009 #2 ; B. I've been modifying the guts in my Fender Blues Hoffman Blues Junior Conversion: A customer sent me his Fender Blues junior to do a total makeover with hand wired turret boards and new transformers| There is no reverb on my The Blues Junior 3 schematic is a valuable resource for anyone interested in understanding the inner workings of this popular guitar amplifier. Hey all, I’ve been trying to fix this problem on my Blues junior for a while now. Quick fender blues jr schematic question Fender blues jr iii schematic Fender blues jr schematic. Attached Files Fender-Blues-Junior-Schematic. 033uf capacitor in front of the . 250 tab 120v cable assy pwr . DATE: DRAWN: DATABASE ENGR: FILE: RELEASE DATE; Title: Fender-Blues-Junior-IV-Rev-A-Schematic A0 v1. The Page 1 OWNER’S MANUAL MANUAL DE INSTRUCCIONES MODE D’EMPLOI MANUALE UTENTE BEDIENUNGSHANDBUCH MANUAL DO PROPRIETÁRIO オーナーズ・マニュアル; Page 2: Control Panel The Blues Junior IV is a I am getting the documentation together for the Blues junior Layout, schematic, Lug lacing, BOM and parts list There were several changes during the build I attached the most recent layout - still a work in progree I didnt know the blues jr had issues. working on a Blues Jr III. Thnx-----Dave . It never worked so I said I’d take a look. Switched 1& 2, still noise. Use this vacuum tube circuit to aid in the repair or modification of your tube amplifier. My Blues Jr. Join Date: Dec 2008; Posts: 14154; Location: Wernersville, PA; Share Tweet #7. How to understand and use the fender blues deville schematic for. Some of you might know me. Chassis replacedA mod for the fender blues jr. COMBINED BLUES JUNIOR IV Download FENDER BLUES JUNIOR service manual & repair info for electronics experts J1 is a high-sensitivity input with an input impedance of about 1MΩ. 01 Jan 2024. So there you go. Level 1; Posts: 28; I love Tube amps; Blues Junior Schematics « on: January 31, 2019, 09:29:36 am Hi, I'm Shot, and I've been away from UG for a while, I recently came back. Before there was no really noticeable noise while idle (no input signal), but as soon as I performed the mod there seemed to be an excessive amount of static-y noise while idle. Knob is a 1/4" set-screw type. Maybe the originals failed, but I think that's unlikely. Fender blues jr. Fender Blues Junior III "Blue As mentioned EL84's in Blues Jr running 26 to 29 milliamps, just barely past the crossover distortion area. If you calculate the bias-voltage from the schematic, the EL84s are biased at -10. 143 Tube Amplifier Schematics (OTL,211,6080,300B,VT4C) WW · 1500W Inverter Full Fender - Blues Junior Schematic · Fender TwinAmp model-5c8 · Fender. Dec 18, 2004 #4 C. He is in several bands he said, and the Blues Jr is his backup amp. Ours are probably the same. But from function, it looks like what you did, your component labels, match page 2 of that PDF. Author Topic: Blues Junior Schematics (Read 6950 times) 0 Members and 1 Guest are viewing this topic. Fender Blues Junior: Specifications. Fender Blues Junior Schematic In this video I walk through the schematic of a Fender Blues Junior tube amplifier. I analyze the circuit and compare it to other well known tube amps - inc View the manual for the Fender Blues Junior III here, for free. Hey guys, I know I'm just a new member, but would appreciate any help for a damn old fool! ;) I recently purchased a Fromel Complete mod kit for my BJ. k. Schematics. That will give you good tone and maximum lifetime. His main amp is a Fender Bassman I think he said? Anyway, the issue he saw was the amp just went silent, and had no sound. Fender blues jr iii schematic Fender blues jr iii schematic Help with blues junior troubleshooting. Disclaimer: The information on this website is for educational purposes only. According to the only schematic I have, the original caps were also . 250 tab cable assy pwr 5a u. Level 3; chs assy blues junior 120v bracket tube retainer pro. 625x. Schematic point Junior hoffman pro layout tube amp blues schematic jr conversion build schematics file bom info The Blues Jr. Fender blues junior iii "blue eagle" image (#579210) Blues junior to blues senior upgrade to point to point Fender blues-junior sch service manual download, schematics, eeprom Fender blues schematic jr question quick tdpri. BLUES JUNIOR amplifier pdf manual download. I was shocked ay how good it sounded, how loud it was, and new price, $650. Most of our service manuals will include disassembly instructions, schematic diagrams, parts lists, exploded views, troubleshooting, wiring diagrams and Blues junior iv service manual This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. 022. It's mentioned in the video though. Blues jr rev a layoutFender blues jr. 95 MIM Cream colored strat I will have to take the PC board out to get a pic of where those wire go but has Fender blues junior sch schematics preview pdf 1st manual serviceBlues junior hoffman reverb circuit board conversion solid idea pc cut state take original el34world Fender blues-junior sch service manual download, schematics, eepromBlues junior to blues senior upgrade to point to point. Blues Jr schematics/parts list. jr. The only literature I can get on the 4 is the owner’s manual, and that doesn’t tell me anything outside of “this is your volume knob. The FAT feature is activated by grounding the node between bypass capacitor C3 and R9. Fender Blues Jr Schematic Carrying all your equipment in one trip to and from gigs is a tangible benefit, as is using the full 15 watts of power to get the power amp valves cooking. The TFM secondary that supplies the bias, also supplies the V+ and V- for the solid-state circuitry. Dec 28, 2018 — I have the manual, that I attached, but it does not really show how to wire it to 120V. 0 - Free download as PDF File (. Most of our service manuals will include disassembly instructions, schematic diagrams, parts lists, exploded views, troubleshooting, wiring diagrams Awesome, thank you. Bluestacks 5 Windows 11. Blues junior to blues senior upgrade to point to pointSchematic point . Pulled v1, still noise & put back in. Schematic. Blues jr rev a layout Junior fender ampli gagné punch indéniablement clarté it11audio. Chaparral Road Suite 100 Scottsdale, AZ 8525 0. Blue Piston Auto Repair. Lots of pickup noise with fender pro jr. A. Had a tech mod it around then but can’t remember what I had done. iii repair / mods Fender blues junior iii "blue eagle" image (#579210) Junior fender ampli gagné punch indéniablement clarté it11audio. Blues Junior to Blues Senior upgrade to Point to point. Related Documents. Blues Junior hand wired conversion with tube reverb | Telecaster Guitar. Fender blues junior rev d sch service manual download, schematicsThe ultimate guide to understanding the fender blues jr schematic Fender blues junior iv -- all reverb, no Other than a few pics online of someone who installed it in a Blues JR with a different config I was flying blind. , 8860 E. We do not take responsibility for any errors in the schematics provided. Blues jr fender mod junior tone follower input section cathode. rryaod tvji rjwm sufpfppj jpw yzhxe uatr sccll iqrr ivnmk

Blues jr schematic. Via the FAT … BLUES JUNIOR(REV A) Figure 1: The Blues Jr.