1980 EHX Small Stone - Power Filter Issue?

[clarisso11]

Hi everyone,

I'm currently working on an EHX Small Stone Phaser, made ~1980. I think this is close to the "Issue J" circuit, with "EH1048"...

[clarisso11]

Hi everyone,

I've been working on an Arion SCH-1 chorus pedal from the 80s. It had a sketchy footswitch, so I decided to convert the whole thing...

[TwinJunior]

Help please! My reverb channel doesn't seem to be working properly. I can hear the reverb responding when i tap on the tank but it's not affecting the guitar...

[Jaoon]

Hey Guys,

so i finally tried to fix my old Valvestate vs100. Iam far away from an Expert. I can repair my guitars and stuff but never tried...

[clarisso11]

Hi everyone,

I recently bought a used Peavey Classic 30, since I heard good things about the amp.

When I turned it on it hummed...

[focusbob]

Hi, I purchased an Ibanez DMD2000 second-hand knowing that it had issues. Sadly for me, the main issue is that the modulation simply doesn't work:
...

[stevenrb718]

Anybody have a schematic for the Digitech RP20 Valve pedalboard? Mine was working, then it started to seem to "have trouble" staying on, where...

[clarisso11]

Hi everyone,

I'm working on repairing a 1981Ibanez CP9 compressor pedal, with a very strange problem: It works seemingly perfectly when turned...

[clarisso11]

Hi everyone,

I am currently working on repairing yet another Electro-Harmonix Electric Mistress, after having repaired one in the past with the...

[clarisso11]

Hi everyone,

I've been working on repairing a version 2 Boss DM2 analog delay, service manual attached. After sorting out a short at the potentiometers,...

[clarisso11]

Hi everyone,

I've been working on repairing an original Ibanez FL-9 Flanger, and I'm quite stuck, to say the least. Here are the symptoms:

• Only

...

[stevenrb718]

I have an Ampeg SVT-350H that isn't outputting to the speaker jacks. It outputs through the power amp out jack, so the problem must be in the power...

[clarisso11]

Hi everyone,

I've been working on repairing a Ibanez PT-9 Phaser, and have already made a lot of progress, thanks to help from this forum!...

[clarisso11]

Hi everyone,

I've been working on repairing an old Ibanez PT9 phaser (service manual attached). The unit had leaking capacitors and damaged tracks,...

[clarisso11]

Hi everyone,

I'm currently working on a 1978 V5 Electro-Harmonix Electric Mistress. Thanks to the help of this forum, I have already made a lot...

[evil79]

Did work on a 4100 JCM900 w/5881’s. Cap job, replaced tubes, replaced a few burnt resistors, resoldered almost all solder joints, cleaned jacks and...

[clarisso11]

Hi everyone,

I recently got an Electric Mistress for repair, and had a question regarding voltages:
When I first got the pedal, one of...

[evil79]

[Queen*Son]

Well I took the amp out anticipating a new tm1 for the tremolo and I wanted to look at some of the mods that were done.. of the 3 1/4" jacks 1 is for...

[clarisso11]

Hi everyone,

I've been attempting to convert a EHX LPB-2 power booster from the 70s to true bypass, and add a DC jack. I was hoping this would...

[clarisso11]

Hi everyone,

I've been repairing an Echoplex EP3, and after lots of help from this forum, I have identified a dead record/erase head as the...