- Jun 20, 2005
[silent:arts] said:desol: first remove the power switch from the middle of the case.
running 115V / 230V next to the potentiometer / switch wires is a very bad idea in this build.
Ok. So i removed p switch and no real change, but i will watch for that anyway. But i did find that the pots weren't grounded properly...so i changed and i think they are wired and grounded right now....and buzz is better but still there. I also found that on channel two, with just GR switch is engaged and input all the way up...output pot causes meter to swing up(+2) then down again to zero? Channel one doesn't do this...needle stays steady when you move channel two (output) pot. And then, engaging channel two meter....now moves channel one meter a little too?? I looked for a little while at the schematic trying to see what is causing this, ...still trying tho. I can't see what switches are which...to see what channel two pot is connected to, to see where to look. Looks like voltage is bleeding into channel 1 from channel 2 meter circuit somewhere. Will keep looking..
I also did some voltage checks at a few capacitors, i'm pretty sure they're normal:
c105, 205 - 92v and 89v
c102,203,202,203 - 89v,69v and 208v 89v,67v and 202v
c101, c201 - 80v and 82v
c115,c215 - 57v and 57.5 volts
Hmm. Back to work..