It’s one of those lunchbox size amps, from the 80s. It’s in mint shape with a cover, I played through it with my electric banjo and it sounded awesome. It has multiple inputs and outputs, a graphic EQ and a cool echo/ reverb.
The only problem is, I was testing it outside, so there was a lot of background noise, but if I put my head near it, I could definitely hear white noise. Not hum, or crackling, but smooth, full spectrum background noise- steady volume level with nothing plugged in, pots at any setting.
Once I heard it, I could I notice it from further away. I definitely couldn’t hear it while playing through the amp, but in my quiet apartment, I know it would drive me nutty,
The service manual is linked, but some of the descriptions of the testing I didn’t quite understand. anyway, I’ve replaced capacitors before, even SMD components, and I’m pretty sure I could replace transistors. Only $250, could probably get it for $200
What are the chances I could get that noise floor down, and how?
That’s my question.
here's the service manual/ diagrams, link and pdf.
http://bee.mif.pg.gda.pl/ciasteczko...eger/Gallien-krueger_200MV_Service_Manual.pdf
thanks!
The only problem is, I was testing it outside, so there was a lot of background noise, but if I put my head near it, I could definitely hear white noise. Not hum, or crackling, but smooth, full spectrum background noise- steady volume level with nothing plugged in, pots at any setting.
Once I heard it, I could I notice it from further away. I definitely couldn’t hear it while playing through the amp, but in my quiet apartment, I know it would drive me nutty,
The service manual is linked, but some of the descriptions of the testing I didn’t quite understand. anyway, I’ve replaced capacitors before, even SMD components, and I’m pretty sure I could replace transistors. Only $250, could probably get it for $200
What are the chances I could get that noise floor down, and how?
That’s my question.
here's the service manual/ diagrams, link and pdf.
http://bee.mif.pg.gda.pl/ciasteczko...eger/Gallien-krueger_200MV_Service_Manual.pdf
thanks!