Grounding Yamaha g100 212

[PrematurelyAirConditioned_Love]

Howdy y'all,

I recently acquired an old solid state Yamaha G100 212 mark ii and I had a few questions about the grounding of the amp that I...

[Lazzerhed]

I’m new to this forum and this is my first post. I have an Acoustic 450 that has been awesome until I moved 6 years ago and put it in storage for 4...

[stevenrb718]

Customer brought in a Mooer Red Truck pedal that is confusing the hell out of me. Mooer hasn't been very helpful and has not provided a schematic. The pedal...

[stevenrb718]

I have a Digitech PDS 8000 and a 20/20 and both are really grinding me. Neither work properly. Each have had the electrolytic capacitors changed. The 8000...

[Mateoo]

I’ve had this dmd 2000 for about a month and everything worked except when I would change the delay time it would make a loud noise. Now the delay doesn’t...

[Spuris]

Hello everyone,

Just last week my Peavey VK100 MK1 died on me. I was playing in a rehearsal and it suddenly went silent. It didn't shut down...

[stevenrb718]

I've been pulling my hair for some time on this vintage Ibanez AD-80. Originally it created the effect, but the effect would die off after maybe 30 seconds....

[stevenrb718]

Anybody have experience with dead WH-1s? I have one that doesn't function or light the LED. The photocoupler LED inside the pedal does light up, and I believe...

[clarisso11]

Hi everyone,

I've been working on a Guyatone PS107 Moving Box Flanger, after a search online I found out that the PCB was identical to a Vox...

[stevenrb718]

Anybody have a schematic for a Boss PS-2? I have a really bad volume drop for the delays, while the pitch shifting section is fine....

[stevenrb718]

I have an 18v Danelectro Cool Cat Chorus pedal where the effect works for a few seconds and then stops "effecting" as if a gate is switched on....

[stevenrb718]

I have an original DL4 that freezes up shortly after freshly being turned on. Usually cycling through the effects quickly will lock it up. Restarting the...

[SunWorshipper]

Hi there been having issues seemingly with my E-gtr at the moment, accept I can't diagnose what the issue is, a cable, pedals or the guitar itself.
...

[musicalfix]

Please does anyone have a schematic for this unit? I can only find the valve versions, not the solid state one. It's this one - https://www.vintagehofner...

[stevenrb718]

Anybody have a schematic or a trace diagram of the Ibanez TS9B Bass Screamer?...

[stevenrb718]

I've been doing repair work on instruments and pedals, among many other kinds of electronics, for a few years now, and I think it's time to pick up an oscilloscope....

[stevenrb718]

Anybody have the schematic for a Zoom 9050? I'm getting all sorts of artifacts and noise through some effects even though I swapped the caps on the analog...

[stevenrb718]

Anybody happen to know what IC the One Control Anodized Brown distortion pedal uses? I'm getting a high squeal after 12 o'clock on the gain and the IC is...

[SUMMONFISH]

So I made a monumentally stupid decision and attempted to disassemble my Mark 10 in order to clean one key, and in the process accidentally disconnected the...

[clarisso11]

Hi everyone,

I recently got my hands on an original 1975 MXR Phase 90 PCB, from an old repair shop - it had never been installed. I found a script...

[stevenrb718]

Maestro G-2. What blends the Echo/Repeat function to the audio signal? I'm not getting the repeats, but when engaged the audio becomes a bit louder and...