I was putting two relays + diodebridge + regulator in my clone. When finished it got terrible noise (I had the bridge and regulator grounded to the chasis which I should not have done..). I have searched the problem for 3 days now without solution
![Crying or Very sad :cry:](./images/smilies/icon_cry.gif)
Turning the following knobs makes the noise worse: reverb, presence, master, drive, drive volume, tone and boost and bright switches.
The switchable treblecap switch makes a 'pop' sound and also sometimes the midcapswitch does that also.
The amp was working beautifully before the relay project. What I have done now:
I removed the relays + bridge + regulator - no help.
I measured continuity on the pots ground points, they were ok.
I removed and measured the presence pot, it was ok.
Removed the channel switch and did put a new in - no help.
Removed the boost switch and put a new in - no help.
Checked every ground point on the amp, all were ok.
Did change the presence cap to tantalum - no help.
Did change the presence resistor to ground - no help.
Changed different PI + V1 + V2 tube in - no help.
I took preamp tubes out one by one. Clean - no help, od - no help, PI - silence.
I had earlier a similar noise problem when I put the ground wire on the wrong side of the presence pot, it gave same kind of noise, but it is not the case now.
Feel kind of frustrated now
![Sad :(](./images/smilies/icon_sad.gif)
Any kind of info much appreciated,