Fender pro junior hum fix. but there is always this annoying low frequency hum.
Fender pro junior hum fix My pedal board set up is 100% homemade. (1 x JJ ECC83 1 x JJ Balanced ECC83 2 x JJ Matched EL84) quantity Increase quantity. There are remedies all over the 'net - seems to mostly stem from how the factory routes the heater wires, which is an easy fix. Removed the fixed humdinger resistors from the tube socket PCB and temporarily wired a 50 ohm wirewound hum balance pot off-board instead. It was nearly as quiet as my Polytone, much quieter than the Cube 30s. and my Trace Elliott Velocette. There is a screw on the back panel which, due to being a tiche too long, touches the chassis and causes the hum. The tone quality was not as it sh I was running out of ideas on this very challenging repair. Kompakt, ehrlich, ideal für Live-Gitarristen, die einen satten Tone und überdurchschnittlich dynamisches Ansprechverhalten mögen. The Phostenix Pages. I know there's a fair amount of info about this elsewhere on the web but wondered what peoples experience here was of the Pro Junior. 60 $42. A compact and straightforward tone machine, this amp is ideal for performing guitarists who need great tone and remarkably touch-sensitive dynamic response. I swapped the PI for a brand new 12AX7 to no avail. The hum/noise that the amp had before (which in the case of my amp . It doesn't get in the way on stage, but for Go through each knob on the amp and see which ones increase or decrease the problem. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Fender Pro Reverb, Reverb hum and hiss (Pro Tube Series 2001) 11-27-2014, 01:47 AM Hello everyone, it seems a very common topic but when I dial the reverb up in my Fender Pro Reverb (pro tube series 2001) there is a huge amount of hiss added. Wasn't bad, but didn't have a specific character the way many other fender amps do. I put that 1 ohm resistor on pin 3 of one tube and read 33 mV. first hit the market in late 1993, or at least the first release was released in September 1993. If you are feeling generous, then head over there and pledge your support. Hum still there with the Fat switch engaged. Just thought I’d pass this on to anyone who has a humming problem with their Pro Junior. One of the things I wanted was to see if he could reduce the ENORMOUS noise level of the Fender (the all Class-A The Pro Junior’s overdrive characteristics are somewhat different from the classic 6V6-powered Fenders, with less midrange and a punchier fixed bias dynamic response, which works really nicely with the 10-inch Fender The bias in this amp is set way too hot, every one owning a pro jr that can use a soldering iron should do that mod, the mod consistof changing a resistor: R29, its a 15k resistor, changing it to a 18k-20k lets the tubes cool down and won't affect tone, it will highly increase tube life! In this video we look at the work done to this Fender Blues Junior amplifier and hear a demo starting at 10 minutes 40 seconds. Since then, much has changed. To place an amplifier with two EL84 in a cabinet of the same size as a Champ is a big mistake in my opinion! Was für ein Arbeitstier! Musiker aller Stilrichtungen lieben diesen Amp. facebook. Subscriber. Guitars. It helped a little bit, but its still there. I did the wire twist mod and switched out one of the pre-amp tubes for a EHAT7 which seems to have killed the hum but it still hisses real loud. had ALL the wires zip tied together in one big bunch. Honing Your Axe. Switched V1, 2 & 3 around to see if it makes a difference This turned out to be a tough one. Forum-Related Info. The previous preamp tubes were the original Fender tubes. 60. 14 posts • Page 1 of 1. Tone Master® Pro Gig Bag New! Fender x Loog Collection Fender x Wrangler Artist Accessories Collection The Acoustic Junior amplifier delivers full, natural, best-in-class performance for acoustic-electric guitar and vocals. Hi, I own a US made black Pro Junior and had similar problems with the stock tubes (Groove Tubes) and with JJ tubes I bought. Thread starter Zekeman; Start date Dec 8, 2008; Zekeman AK Subscriber. It sounds great but has always been a little unreliable. The store I worked in was a Fender dealer and we got a two more of these in: same problem. with new tubes. It can hold its own and then some, but I struggled with the "boxiness" factor. When I connected it to a bigger speaker cabinet the noise disappeared. I read on-line that EHs were good at reducing noise on this amp, so I tried them and the situation improved dramatically, hiss, hum et al became much lower and the amp much more usable. The source of hum noise may come from different factors such as bad tubes, bad filter capacitors, low heater voltage or amplifier locates Removed the fixed humdinger resistors from the tube socket PCB and temporarily wired a 50 ohm wirewound hum balance pot off-board instead. Tried the AC safety ground With the volume at zero there is constant white noise and what sounds like a very loud power cycle hum. Take the middle screw out of the back Hey guys, I swapped the 1st preamp tube from 12AX7 to 5751 to tame the gain and mellow the tone a bit. Als Update bekam der 15 Watt Pro Junior IV jetzt einen modifizierten Volume-Schaltkreis und ein klassisches Tweed-Design. Humming V1 in Fender Pro Junior. Selected Premium Grade valves for superior tone and performance. Design Modules. and found a combination of tubes that sound good in V1. If the reverb, treble, mid and bass do not increase the noise level then its going to be in the preamp section. HUM and Noise - It's a myth that tube amps have to be noisy. I'm just not getting any guitar sounds Logged ListerHayes. patreon. Post by Gabriel » Mon Nov 24, 2014 1:06 pm. Now to begin modding the amp until it is broken again (for fun and learning). It could also partially be due to being biased too hot as this series tends to overbias the EL84's I´ve got this Pro Jr that staring to give me headache. Guitar Wiring. Fully guaranteed. So I bought a fender pro jr a couple of weeks ago and it's been great however I have been struggling a little bit to tame the Disconnecting the NFB loop will increase highs and make the amp sound tighter. Recently my Fender Pro Junior started making this really loud humming sound (louder then the typical tube amp hum that I usually get) when I turn it on. So I took the whole amp apart Fender Pro Junior problem. $32. is reputed to be rather noisy and buzzy. it is a different league, much better complex tone. All versions are Amp Building/Technical/Repair Help Eliminate Pro Junior Hum I've always wanted to try a Pro Jr and bought one recently but as good as it sounds cranked up it idles with a fair amount of hum. I have a 1 spot 9v with a daisy chain connecting to each pedal. Post by Kilgore Trout » Sat Apr 11, 2009 3:20 pm The Pro Jr. Well, so I thought. Fixing Bad Reverb on Fender Blues Junior. I'm looking for a Blues Junior for a gift for Xmasfound one on the auction site with a bad reverb. Pro junior schematicFender pro junior valve amplifier repair log Again with the pro junior hum and buzz issueFender pro junior iii [reparo]. Fender Pro Jr Hum ? Harmonious Notes. The only two amps I can think of off the top of my head would be the Fender Pro Jr, and the Vox AC10. the craftsmanship, history, and innovations that have defined Fender's legacy. TLDR: loud hum and brightly glowing power tube. A stupid thing that I have seen help, worth a shot. Add to basket. Simply needed a few new tubes. I have a pro junior that hums louder than any of my As I was leaving, I decided to try a used Pro Junior that had caught my eye. Is it safe to turn my amp on again or am I risking a tube exploding on me? What might the problem be? Thanks! Hi all, toob noob here needing your wisdom. The Pro Junior Long-revered by players of all stripes, the Fender Pro Junior amp is a compact and straightforward 15-watt all-tube tone machine. I've considered both of those options for mine, primarily to fix the hum/hiss. it. Since then, I've sent it to a qualified guitar tech who has further enhanced this great amp by completely reworking the circuit, upgrading all the parts, cooling the bias, eliminating the hum, and who just overall improved Hello, any ideas on what this sound could be coming from my fender pro junior 4? I thought it might be a loose screw so I tightened every screw in the amp/cab/speaker. NeilLivs. It's got a single 10" speaker for a tight, balanced sound that breaks up at lower volumes than a 12" speaker normally does. There is some discussion of it (in the In this episode of DIY, we are going to change the tubes inside a Fender Pro Junior Amp. kamen Ende 1993 das erste Mal auf den Markt, oder zumindest das erste Release wurde im September 1993 freigegeben. Mysteriously, this cuts the hum about in half. Thread starter SaMurray; Start date Oct 13, 2008; S. tomincognito. Never tried the woody. Did a re-cap job on her a few days ago. Reverb tank was a bin-job in the end. Try Searching a different location below or contact fender customer service at 800-856-9801. What’s the reasoning for the Fender 68 custom Pro Reverb reissue only having a 1x12 instead of being a 2x12 like the other original silverface’s. As silly as it sounds, this is The Fender Pro Junior is a stunning small Fender Tweed amp that captures all of that classic Fender tube sparkle. 2013-01-31 11:11 am #1 2013-01-31 11:11 am #1 I heard they fixed the reverb hum, but do these amps still have noticeable background hum? I need a pretty quiet amp and I don't really have the money/time to send a Blues Jr off to be modified. About adjusting the bias on my Pro Junior, i come from the marshall side so like i always used to do with EL-34s i soldered a 1 Ohm resistor between the cathode and ground. Gabriel. If you go down either route - turret board Pro Junior, or converting to 18W - please report back. That might be hit or miss with Pro Jrs. Pickups, pedals, amps, cabs, combos. I searched the forum and while I saw a few things on Tubes for a fender pro junior, I didn't see exactly what I was looking for. The Fender Pro Jr. Dec 8, 2008 Fender Pro Reverb Amp (reissue) Tremolo not working. I have followed the same design guideline as other builds and this one hums like crazy. Studio monitors and solid state bass amp do not produce this noise, with or without instrument Customer: my fender pro junior has a buzz and oscillation, got a fix? Technician's Assistant: I understand you're experiencing a buzzing and oscillation issue with your Fender Pro Junior. Woke up the following morning with a cunning plan SOLD SOLD SOLD About a month ago I received a Fender Pro Jr with an upgraded after market power transformer (generic) as part of a trade. The words Fender®, Telecaster®, Stratocaster® and the associated Hello everyone. I recently bought a Fender Blues Junior IV, and I've been getting this hum/moan coming from it. Fender pro junior valve amplifier repair logReverb fender schematic tube unit guitar tank circuit spring amplifier valve layout pedal In terms of measurements, the Pro Junior is the easiest fit, otherwise I'm looking at hybrids like the Fender Super Champ X2 or the new Blackstar Silverline Standard. The position of the ribbon cables in that whole line of Fender amps is super critical in terms of hum/noise. Lots of pickup noise with fender pro jr. Later that month at an off-night gig in a small Blues club, I tried a friend's Pro Junior at medium-loud Blues volumes. Applied Whammy Bars 101. Long-revered by players of all stripes, the 15-watt Pro Junior IV adds a modified volume circuit and a classic tweed appearance to this workhorse amplifier. However as soon as plug ANY pedal in I get this AWFUL hum and the amp is 100% unplayable. Fender Pro Junior. . The hum changes with my volume knob on my blacktop tele, and also quietens down when i touch my pots. When i got the volume pot all down it leaks in to Fender Pro Jr Hum ? Harmonious Notes. I have been converting a Pro Jr. That will help isolate the section of the amp. Eventho Im more into fixing vintage valve amps, here is a clip of the process of reparing this small valve amp with its famous PCB. It could be the shielding or lack thereof in the guitar itself, the cable, the cable length, connection to the cable from the amp or guitar end. Most amps that sound OK without a NFB loop are cathode biased, not fixed like the pro jr, but if you have made other changes it might work for you. That Pro Junior was dead silent at idle, with or without the guitar plugged in. I've tried external cabinets, but I always come back to the stock Pro IV with the P10R as it sounds the best. Pappa needs a brand new camera and lens! (don't tell the missus). Glad it's working out for you. It’s ideal for guitarists who enjoy touch-sensitive dynamic response and great clean-to-mean tones with an uncluttered feature set. Fender Woody Pro Junior - Opinions. Should There are definitely ways to cancel out hiss in an amp - plate resistors are a big hiss generator, swap them for good metal film style, or with a snubber cap at the plates of a preamp tube, Loud hum is a known pro junior issue. That sounds like the hum of single coils more than anything and would definitely with the gain dimed out like that. Fender Pro Junior Kit Problem Also, the normal Pro Junior hum is there and it does go up in volume when I turn up the volume pot. Members Billm who does Blues jr mods and posts on the fender forum is working on this as a mod for the pro jr. It acts like an antenna for hum, no shit. I am having a serieus issue with it. iv The ultimate guide to understanding the fender pro junior schematicBlues junior hand wired conversion with tube reverb. No need to precise that the Red JJ markings were almost brown on the tubes. Turns out there is some very low volume when I dime the volume knob on the amp (no where near the usual loudness). Guitar Schematics. Wax poetically on the punchy ambitious For more info, Subscribe to this channel, join us at facebook. Hey guys! First time poster here. 2 large ones and 2 small ones. Suggestion Box. Joined 2013. Today, when I powered up for practice, no sound. Owner sai Hey yall, I just bought a stellar Blues Jr from Reverb for an absolute steal. and hand wired the circuit using the Hoffman project plan. Fender used it to even out frequency response, not to increase high end. I get them fixed up and out the door and a week later he calls me back and tells me one of the emits a loud hum through his external speaker cab but the other one doesn't. Pickup Testing and I replaced the two EL-84's (with Groovetube EL-84's from Guitar Center) in my Fender Pro Jr. Folow me step by step as I diagnose and fix a succession o The Fender Pro Jr is a great value and a good sounding little amp, and with a little help can be a GREAT little amp. com/RubberDuckTechhttps://www. com/rubberducktech/ Fenser Pro jr hum. In 2002 there weren't aftermarket PTs or OTs made especially for the Pro Junior or Blues Jr. Messages 4. Remember to like, subscribe and share these videos if they tickle your fancy. com/PsionicAudio, or email us at info@psionicaudio. Unfortunately it's not uncommon for FBJs to have this issue. Wax poetically on the punchy ambitious hum of overwound single coils and the joyful enigmatic punctuation of the We play a New Fender Pro Junior IV LTD with a 2010ish Gibson Les Paul Custom and a 1969 Fender Strat. I have no idea what they are. It allso have ghost notesor maybe a springlike sound that follows the guitar tone. If you start losing your filter caps the AC ripple will come through your amp as hum. I have since installed a TO20 transformer, a birch baffle and WGS Veteran 30 speaker. I used a matched pair JJ tesla el84 and a pair of electro harmonix 12x7a and About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Try different tubes if you have them, or just swap the positions of the existing tubes (switch the 12AX7s, see if it helps, then switch the EL84s). Amp into a version with an eyelet board - see the pictures for the schematic and actual amp. to fix it. Here's the repair portion of a Blues Jr getting a very common fix!https://www. The Pro Junior IV has a brand new modified volume circuit to allow you to really drive the tubes. I have an early '90s tweed pro junior. I noticed a significant hum even at bed room volume. SKU: AmpKit169 Category: Fender Pro Junior Tag: Improved shielding and wire dressing reduces hum and buzz. Quick update, most Fender pro Junior amps do, in fact, have some his For more info, Subscribe to this channel, join us at facebook. Quite a common problem with the cheap caps that Fender use. It got a nasty hum that goes up with the volume. Author Topic: Help with Fender Blues Junior Valve Amp Hum (Read 6543 times) 0 Members and 1 Guest are viewing this topic. and innovations that have defined Fender's legacy. The Gallery. A mod for the fender blues jr. The fix that cured my buzzing problem was changing all of the stock tubes. Had a Fender JR Pro (now sold) and from factory, EL84’s were at around 90% dissipation. Moderator: mods. The C2 mod is puzzling me. I wish I had read this a couple years back when I had 2 stock Pro Jr's. Pickup Testing and Much better but still a bit noisy in terms of hum. They come from different sources and their fixes are different as well. Pro Jrs have everything soldered or attached to a PCB board. Get 10% off Fender gear when I have a Blues Jr. Moderators: pompeiisneaks, With nothing plugged into the Pro Jr, how is the hum, at any position on the Volume control? If there is no hum to complain about with no guitar plugged in, you're not going to improve anything by modding the amp. I worked on a A noisy Fender in need arrives at D-Lab. If you find it increases with the one of the EQ knobs then its in the tone section etc. Die Fender Pro Jr. I might try putting the old tubes back in and see if the hum is still there. I don't have a collection of old Your support means a lot to me. Fast Heating, Electronic Repair, 110V MINGQ-23%. Weird, I know. So a customer brought me two Fender Pro Jr's both with typical new age Fender issues (leaky caps, burned boards, cold joints, etc). I believe Fender Pro Jr Hum ? Harmonious Notes. Stock (OEM) Guitar Wiring Diagrams. AC, NFB, speaker, signal, heaters - EVERYthing. I've been playing the amp, making mods, etc. So any ideas? Any procedures I need to go Fender reverb ab763 schematics amplifier blackface input robrobinette annotated circuit positive 1993 hum vibrato amps valve marshall Hoffman blues junior conversion Pro schematic jr Fender Pro schematic jr. This wont fix it soley, but take out the middle screw in the back. Tone Control Discussions. Recently fixed the hum in my Pro Jr. https://www. com/bikesburgersbeers A custom This Blues Junior had been making a lot of noise lately. This one turned into a marathon! Nasty faults which took a while to fixbut I got there eventually. If I crank the volume and the master, theres a slight hum, but once i plug in my cable (with no guitar) the buzz becomes crazy loud. Removed V2 - hum still there. So, here goes: (TL;DR at the bottom) I'm a tube noob (pretty much an amp noob). I had to fix an early version of the Pro Junior that made a lot of noise when you turned up the volume. This kit includes mods to either lower the gain and increase headroom Humming V1 in Fender Pro Junior. I build and repair tube A start is to find out what noise you're hearing and tackle it individually. I have a Fender Pro Junior IV that I usually let warm up for a minute with the volume and tone on 0, but for the last two weeks I have not been LOL! I have a great tech here who just did complete overhauls and NOS retube of my Pro Jr. Seit dem hat sich viel getan, werden auch bald 20 Jahre, die der Verstärker mehr oder weniger unverändert gebaut wird. For me I have a pro jr and its my favorite amp out of all of the amps (and boutique amps) I EZ Pro Jr. Member. I bought a Pro Junior IV and noticed that it hummed way too much for my tastes, so I The amplifier hum noise is not strange to every one. I'd love the Orange Rocker 15 or the AC10 but my max height is actually 40cm, maybe 41 at a push, so they are really on the limit and it would be a real ballache to get one home Doug's 3rd image is an 18W layout for a Pro Junior chassis - solid state rectified, cathode biased, both input triodes strapped in parallel. but it is more "hum" than "hiss". Check About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Fender Pro Junior - Noise. The number one complaint about this little gem is the noise and hum that it produces. back in August 2021, and have played the amp daily since then. It's a basic schematic with a 12ax7 preamp, a 12ax7 phase inverter and two el84 output tubes. Posts: 3178 Joined: Sun Apr 11, 2010 8:46 pm Fenser Pro jr hum. The old Fender Pro Junior is a pretty good sounding small guitar amp (especially if implemented with a better speaker) and while I was able to improve the hum and buzz, there's still quite a bit of hiss. The amp sounds phenomenal. The hum has these characteristics: - NOT related to the reverb amount - worse after pressing the fat switch - the hum is constant. I have removed V1 - hum still there. Pickups. noise fix & mod especially the heater wires, NFB (if present) and signal wires. I've also owned Laney Cub 10 and I liked it much especially for bedroom level, but once I got the Pro Jr. remove the top middle screw from the back panel. Jump to Latest T. the VHT is hand wired thus it can probably be fixed easily if something goes wrong. One of the complicating factors is that hum is subjective, so a loud hum might not bother one person, while the quietest buzz might drive another nuts. He showed up yesterday I've finally got around to our preliminary investigations into noise in the Pro Junior and posted as promised. For this amp I used a replacem I bought a used MIM Blues Junior (from a craigslist equivalent site) today. Lutherie and Repair. instagram. (pedals velcroed to a plank of wood). Warm yet tight and clear voice, the P10R Jensen is very suitable for the amp. Then measuring the millivolts across it and determining the bias in milliAmps. This version has a Jensen P10R Alnico speaker in it, wh Fender Pro Jr Hum without a guitar connected, grounded outlet. Level 1; Posts: 9 The Blues Junior is fixed bias so it cannot be adjusted (without component swap at least). This is my first tube amp, but I'm aware that tube amp does have some hum. Schematics 2 Audio amplifiers and loudspeaker boxes BOOMBooks-43%. Reference Articles. From the mods below, I was wondering if anybody has any experience. I don't know if Fender has since fixed the problem as that would Some of these IC's have been found to fail within a few hours of use. com. Pickup Testing and I ditched the circuit boards in my Fender Pro Jr. Following a YouTube repair channel dedicated to Pro JR and Blues JR mods, I’ve added a small bias pot to bring it down to 70. However, it How does the Fender Pro Junior IV handle pedals? It does increase volume and some pedals create a hiss, even with a Voodoo Lab Pedal Power supply. Originally, the Pro Jr. Even with Vol set to 0 the Pro Jr. but there is always this annoying low frequency hum. SaMurray Member. So hopefully soon there will be a solution that probably costs about $2 worth of parts. Fender Pro Jr IV (the newest one) General discussion area for tube amps. Wax poetically on the punchy ambitious hum of overwound single coils and the joyful enigmatic punctuation of the telecaster quack. A dozen or so years ago I was on the hunt for a lower powered amp for basement jams and after a few different ones got a Pro Jr. exhibits an annoying 100Hz hum that can be attributed to a circuit fault as well as a grounding problem in some versions. zaphod42; Aug 23, 2024; Tube Audio; 2 3 4 Was für ein Arbeitstier! Musiker aller Stilrichtungen lieben diesen Amp. I know that my fender pro junior has 4 tubes. Thread starter tomincognito; Start date 2013-01-31 11:11 am; Status Not open for further replies. The amp sounds pretty good, but I've noticed that there is a constant hum that I don't hear when I plug into my SS Harvard Reverb II (which is dead quiet). It sounds like your amp is in need of basic service, which includes I had the same problem with my pro jr. Seems to have done the trick but the dreaded HUM is back. Can you tell me when did you first notice this problem? Customer: was just shipped the amp (used), problem as soon as I plugged it in Technician's Assistant: Have you tried any troubleshooting But yeah I think it is worse when I have the Master at 12 (not o'clock) than if I roll the Master back to like 4 and turn the Gain up to increase volume. The hum used to drive me nuts. A bit of static and popping noise and very sensitive to vibration. IMHO the PRO Junior is too simple and too loud. Tubes were shot, microphonic, running hot, Hum, hiss, pops, you name it. Level 1; Posts: 20; I love Tube amps; Re: Fender Pro Junior Kit Problem Best valves for Fender Pro Junior amplifiers. At one point you used hum and hiss to describe the same thing and that confused me - hiss is very high frequency noise sounds like "sssssss" and hum is the low frequency constant "mmmmm". mtqkpjxwbqsvbhnsscssiwkuscmugyqctgkaszvrtkhdzilgooymivmizxyrkhzexxpmnj