Hello Friends 🙂
I have this Pyramid pa800x Left Channel works fine But Right Is the Problem.
I had replace all Final Transistors with 2sc5200 and 2sc1943 Because my pa310 model has that inside. I decided to put in two Transistor one each into corresponding slots. Powering up the amp with only two Transistors the Transistors get hot and blow the fuse. At first I though I bridge a Positive rail with Negative. I recheck every soldering and everything was fine. I replace the fuse and power up back again. Fuse burn and transistors were extremely hot (only 40seconds it was on for) I had remove the transistor and test them they were burn. I test the volt for the collector in the PNP section it was -57v For the NPN section it was 57v. I check the volt on the Emitter it was -47v on both PNP and NPN Section...
Is that volt suppose to be there at the emitter pads?
I had check the Driver Transistor THey Are good but the Base and Emitter Pad were fluctuating between -47 to 47v Sometime it is stable 32v
Any ideas what may be the problem?
Thank You in advance 🙂
I have this Pyramid pa800x Left Channel works fine But Right Is the Problem.
I had replace all Final Transistors with 2sc5200 and 2sc1943 Because my pa310 model has that inside. I decided to put in two Transistor one each into corresponding slots. Powering up the amp with only two Transistors the Transistors get hot and blow the fuse. At first I though I bridge a Positive rail with Negative. I recheck every soldering and everything was fine. I replace the fuse and power up back again. Fuse burn and transistors were extremely hot (only 40seconds it was on for) I had remove the transistor and test them they were burn. I test the volt for the collector in the PNP section it was -57v For the NPN section it was 57v. I check the volt on the Emitter it was -47v on both PNP and NPN Section...
Is that volt suppose to be there at the emitter pads?
I had check the Driver Transistor THey Are good but the Base and Emitter Pad were fluctuating between -47 to 47v Sometime it is stable 32v
Any ideas what may be the problem?
Thank You in advance 🙂