Looking for suggestions on repairing an old Fuzz Tone.
Issues
No output
Broken leg on final 2N270. Replaced with a general...
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by misterc57Yesterday, 06:51 PM
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by tremIn the link below, there is a 50/70 cap where you would suspect in the bias circuit.
But there is also the same value on the other side of the 3k3 resistor...-
Channel: Theory & Design
Yesterday, 03:02 AM -
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by Jon SnellI wonder what it is ...
Fully transistorised, (very modern) germanium transistors throughout ...
More to follow....05-14-2024, 11:57 AM -
by ParkerkHi all! I’ve been on the hunt for schematics for a thunderfunk tfb 750a so I can fix mine! Any help is greatly appreciated! Thanks in advance!
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Channel: Schematic Requests
05-17-2024, 05:28 PM -
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Hey all.... I got a doozie. Dude brought me a 2006 Marshall JCM 2000 Triple Super Lead that comes on, but no sound. Ok. I crack it open and someone had already...05-14-2024, 08:40 PM
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by tremThis is the first time i have looked at one on a schem. not sure if this is a common way of doing it or not.
How is this creating a magnet for...-
Channel: Theory & Design
05-12-2024, 10:28 PM -
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Hello folks,
This amp is haunting me! It motorboats. Here is what I've done:
1) Unit is motorboating. NOTE: It does not motorboat on load....-
Channel: Music Electronics
05-17-2024, 07:19 PM -
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by StratfordadeMysteriously this Randall RG50TC (3x12AX7 pre-amp, 12AT7 PI, 2xEL34 power amp) will sometimes buzz when switching from clean to overdrive when input jack...05-16-2024, 12:08 PM
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by DrGonz78So I havre been rummaging through the electronics war zone known as my garage. I came across this ac delco 7265604 vibrator power transformer. It’s...
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Channel: Music Electronics
05-15-2024, 02:50 AM -
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by indyjosh1969Greeting Folks,
I recently purchased a nonfunctional Orange Crush 20RT chasis and found a charred resistor in the power supply rail during inspection...-
Channel: Solid State & Hybrid
05-17-2024, 02:45 AM -
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Hey folks,
In the past 2 weeks, I got 2 of these 'MeatSmoke' amps after 10yrs of never hearing of them at all. The first one had pretty simple blown...-
Channel: Music Electronics
05-15-2024, 04:34 PM -
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by yarnikHi
Ive got a SubZero 15 speaker which I'm trying to repair. This uses I guess, standard generic Chinese circuit boards. Problem is I can't find any...-
Channel: Schematic Requests
Yesterday, 10:10 AM -
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by Chuck HI got the idea for this thread from a new member that posted to say the forum helped him repair his Silvertone that he got for free in the 80's on the road...
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Channel: Guitar Amps
05-04-2024, 06:54 PM -
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by StratfordadeI'm fixing up a very nice Randall RG50TC (2xEL34 power tubes) whose owner reported reduced volume. Narrowed this down to a PA problem and subsequently discovered...05-07-2024, 02:56 PM
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by nevetslabTo my "amusement", a Blackstar Series One 200 Bass Amp was sent over from inventory, label stating No Output. And here I thought all those Blackstar...01-18-2019, 10:34 PM
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Hello folks,
I have a vox Super Beatle mod V1143. It has a bunch of what I think are FET's in the input stages & wonder if anyone has the schemo...03-25-2010, 03:53 PM -
by tdlunsfoI have a VTM 120 on the bench in which the customer requested a full recap and a bias pot. Done. He brings me NOS Phillips ECG tubes and the plate current...05-08-2024, 02:58 PM
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by tedmichBrad the amp tech in Australia is doing an incredibly ambitious rebuild of a totally trashed Mesa!
Braver then I!
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Channel: Mods & Tweaks
05-03-2024, 01:12 AM -
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by sorelHi everyone.
With a standard ambient temperature (let's say 25°C) sound disappears then comes back and so on.
Since the "cut"...-
Channel: Other Amps
04-15-2024, 08:54 AM -
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by misterc57Picked up a R25T combo with no speakers this week. I believe they were only made in 1960. I hope to get it operational. Looks like work had been started and...03-08-2024, 04:22 PM
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by AxtmanWho do you use for reconing speakers?
There used to be a local guy (Seattle) at 'Around the Sound'. He had a tiny shop that was packed to the...02-24-2021, 09:37 PM