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Old 26th March 2009, 04:08 AM   #11
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Location: Louisiana
Did the op-amps have positive AND negative voltage?

Did you reconnect the jumpers you cut to isolate the audio section?
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Old 26th March 2009, 08:32 PM   #12
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yes the ops had neg and pos voltage and yes i reconnected the jumpers for the audio side.
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Old 26th March 2009, 09:11 PM   #13
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Do you have positive/negative rail voltage on the center legs of the rectifiers?

Black probe on a non-bridging speaker terminal when measuring the voltage.
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Old 26th March 2009, 09:58 PM   #14
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ok some weird sh$t just happened when i tried that. at first i had nothing to the right one and when i touched the left one to the middle leg it made a big spark!! then all the sudden they work every thing that didnt have power now does. the right one has 19v and left has -19v. and i checked the outputs again and now they have 20v to the center leg also!!! dont know what just happened. the amp was making a real high pitch noise when it first powered up. then that big spark when i tried to check the rectifier, now no high pitch sound. tried to shut off amp and turn it back on to check everything again. and everything still works!!!??? but i still havent checked it for sound.
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Old 26th March 2009, 10:04 PM   #15
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The rectifier likely has a broken leg or a broken solder connection.
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Old 28th March 2009, 07:03 PM   #16
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SWEET!!!! this amp is working perfectly now. i fixed the connection on the rectifier and all is well. thanks again for all your help. just one more question about this thing. when bridging this amp do i use left pos. and right neg. or both positives? i see the previous owner had screws only in the positive terminals. i just want to make sure i bridge it correctly.


trevor
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Old 29th March 2009, 12:50 AM   #17
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You bridge it with the two terminals that do NOT have 0 ohm continuity between them.
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