fellowesman Posted June 26, 2005 Report Share Posted June 26, 2005 have a peavey pv-8.5c that has a blown trasitor the schematic i have is not readable anyone have one thats readable Quote Link to comment Share on other sites More sharing options...
ante Posted June 27, 2005 Report Share Posted June 27, 2005 Hi, Try this one:http://www.electronics-lab.com/forum/index.php?topic=2458.0 Quote Link to comment Share on other sites More sharing options...
fellowesman Posted June 28, 2005 Author Report Share Posted June 28, 2005 that not much better i can make out some of the componetssome are just not readable is it readable to you? Quote Link to comment Share on other sites More sharing options...
ante Posted June 28, 2005 Report Share Posted June 28, 2005 Hi fellow,I agree, the quality is not perfect. I can read the parts list but some of the small print on the schematics is not clear. For trouble shooting it could be good enough, however it depends on what you need. With the help of the part list and some imagination it is possible to identify not all but most of the parts. Sorry about this but it was the best I could come up with.BTW, which transistor is blown? Quote Link to comment Share on other sites More sharing options...
fellowesman Posted June 28, 2005 Author Report Share Posted June 28, 2005 frist of all i want to say thanks to you people that put on and maintainthese forums! you people really do a wonderfull job. i am glad to seesome body keeps these old schematics. i belong to several forums and never found one that i did not find help atthe transistior that is blown is on the frist board print on that linki did like you said and did some creative guess work and came up withmps-6534the people that brought me the amp said that thought it was a under-power or low voltage this is where i have problems this transistior comes off a +83 volt with a i do belive a 133 ohm resistior on the base side? Quote Link to comment Share on other sites More sharing options...
ante Posted June 30, 2005 Report Share Posted June 30, 2005 How do you mean”low voltage”? Quote Link to comment Share on other sites More sharing options...
fellowesman Posted July 1, 2005 Author Report Share Posted July 1, 2005 two other bands in the area had amp problemsthey said that someone checked the outlet and foundthat there was only 90v Quote Link to comment Share on other sites More sharing options...
ante Posted July 1, 2005 Report Share Posted July 1, 2005 OK, I see. There is perhaps a continuous overload on the grid in this area at prime rehearsal time! ;D Quote Link to comment Share on other sites More sharing options...
fellowesman Posted July 2, 2005 Author Report Share Posted July 2, 2005 i dont see a small amp tran blowing on low voltagebut no fuses on the board were blown!!as i read the print this amp should see 40vthe print showes 83v with coming in from power supplythen thru a resistor to the ampam i reading this right Quote Link to comment Share on other sites More sharing options...
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