mg100df possible missing power rail ?

[Antwan]

Hi guys i have a mg101fx on my bench ( i repair things just to learn)

Most of the unit seams to work but in clean its very quiet
od seams quiet im wondering if the switch is managed by a ic or its dont inside the dsp. the controls dont seam to work at all in clean mode
if anyone has a schematic id appreciate it or just some general advice
i though it may be a missing rail to one of the op amps at fist but due to having some issues with shaky hands i cant really get to them woth out soldering fly leads first so wanted to narrow down options

Thanks as always

[g1]

Did you mean DFX? schematic attached (head version).

[Antwan]

sorry its a cfx my mate so i think the processing side is totally different but ill look and let you know thanks

[Antwan]

sorry i cant seam to edit the title the model is a mg101cfx

[g1]

sorry i cant seam to edit the title the model is a mg101cfx

Is this the head version? : https://music-electronics-forum.com/...etch?id=996852

[Antwan]

sorry i cant seam to edit the title the model is a mg101cfx

thank you so much ill update you as i go maybe the thread would be usfull the anyone with the same issue along thr line

[Antwan]

ok so i was missing a rail looks like someone has had a try at this before. After repairing that i regain control of all the function but the clean channel is still low my assumption now is simple a bad cap or resistor on the output chain to the Amp as i pick up a full signal st the first digital switch but nothing at the output section well a low signal quite my money is on a resister divider. ill get my microscope out tomorrow and follow the path see what i can find