Zoom 9050 schematics

[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...

[Yankazaz]

Hi guys,

My Code 25 amps has an issue, as after some minutes after power on (working out loud as normal), then it automatically going in silent....

[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...

[stevenrb718]

Got a weird one here with a Boss GE-10. Pedal functions normally, except the input level switch works but audibly doesn't change anything. Probed points...

[stevenrb718]

Boss ME-50, originally with no power. Found voltage rails but seemed to be missing the 3.3V. Replaced a couple blown capacitors, a blown transistor, and...

[stevenrb718]

Anybody have any thoughts on FM4 that won't kick on? Had a short on the 3.3V line that located to the 56364 IC at U2. Replaced the IC and seem to have proper...

[stevenrb718]

Boss FRV-1, bypass works, effect signal works. However, when the effect is on, there is also a repeating, pulsing sound continuously. The sound is similar...

[clarisso11]

Hi everyone,

I've been working on repairing a Boss DD3 delay, here is the service manual: https://www.synthxl.com/wp-content/uploads/2018/04...

[stevenrb718]

I took in a buddy's TS-1 Tremolo that's giving me a hell of a time. At this point I'm more annoyed by it, and just bugged to figure out the issue. The intensity...

[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...

[stevenrb718]

Does anybody have the schematics for the Guyatone PS-024 Disortion H pedal? Something in the back end is almost totally shunting my effect signal.

[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...

[stevenrb718]

Anybody have the schematic for the Yamaha DSC-20M chorus pedal? Pedal works under battery, but plugging adapter in kills all life; D2 diode also does not...

[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'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,...