Members /pepi\ Posted January 23, 2010 Members Share Posted January 23, 2010 Any of you repair guys have a schematic for one of these. I've got one in on repair. Channel A protection relay will kick out and I can't find anything shorted on in the poweramp or preamp. Powersupply voltages look good too. Probably a problem in the protection circuit and I need a schematic to troubleshoot that PIA Link to comment Share on other sites More sharing options...
Members tlbonehead Posted January 23, 2010 Members Share Posted January 23, 2010 Any of you repair guys have a schematic for one of these. I've got one in on repair. Channel A protection relay will kick out and I can't find anything shorted on in the poweramp or preamp. Powersupply voltages look good too. Probably a problem in the protection circuit and I need a schematic to troubleshoot that PIA listen here Buster! Umm, anyway, I had that same model amp for 6-7 years pushing the hell out of it on subs and it never failed or hiccupped even once. Killer amp and healthy output for its rating. You could check Andy (agedhorse) in Live Sound, or just post this there for any of the techs. Also, have you tried LOUD ? Maybe they have something. Or as a longshot, the owner of Reason Amplification used to be the tube amp guru designer for Crate/Ampeg. Maybe he would have some ideas for you. Link to comment Share on other sites More sharing options...
Members teemuk Posted January 23, 2010 Members Share Posted January 23, 2010 MusicParts sells one for $20 and Schematic Connection for $15. Link to comment Share on other sites More sharing options...
Members /pepi\ Posted January 24, 2010 Author Members Share Posted January 24, 2010 listen here Buster! Umm, anyway, I had that same model amp for 6-7 years pushing the hell out of it on subs and it never failed or hiccupped even once. Killer amp and healthy output for its rating. You could check Andy (agedhorse) in Live Sound, or just post this there for any of the techs. Also, have you tried LOUD ? Maybe they have something. Or as a longshot, the owner of Reason Amplification used to be the tube amp guru designer for Crate/Ampeg. Maybe he would have some ideas for you. I found the problem thermo cutout circuit. Fixed and up running Thanks anyway Link to comment Share on other sites More sharing options...
Members tlbonehead Posted January 24, 2010 Members Share Posted January 24, 2010 I found the problem thermo cutout circuit. Fixed and up running Thanks anyway you're a pretty smart plucker! They are pretty solid amps! Whatcha using it for? Link to comment Share on other sites More sharing options...
Members /pepi\ Posted January 24, 2010 Author Members Share Posted January 24, 2010 you're a pretty smart plucker! They are pretty solid amps! Whatcha using it for? Been plucking for over 30 years at this shit. Started with B/W TVs Not mine. Got it in on repair from a local band. And yes, this thing is made very well ... like a tank Link to comment Share on other sites More sharing options...
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