Question about Power Acoustik GOTHIC OV2-520 Car Audio Amplifier

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Amp works but DC comes out of one speaker output

The amp plays music but there's a steady flow of DC out one of the speaker outs. I blocked the DC with a capacitor in series with the speakers and it sound ok then, but something's obviously wrong. I have electronics knowledge, a multimeter and can solder and know where to get replacment transistors and diodes etc. just dont know how to:
A. find the bad part, and
B. replace it cuz power acoustik uses these clamps over the transistors that look like they're put on with a machine and really hard to replace by hand.

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Thanks that was very helpful! I guess with the clamps you just pull? like away from the board, the pictures etc. weren't all that clear. as for the amp repair guide thank you! it sounds like a shorted output transistor for sure, and that should be very easy to identify with a multimeter.
I'll work on it over the next week or so if I get time and let you know, thanks again!

Posted on Oct 06, 2008

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To get the clamps off click HERE.

There may be several bad components. Normally, shorted outputs (the most likely cause of DC on the outputs) causes the amp to go into protect mode. In your amp, you may have shorted output transistors, open emitter resistors and possibly a problem with the protection circuit.

To get up to speed on the basics, read through the following page:

Amplifier Repair Primer

After you read through that page, remove the clamps and check all of the output transistors to determine if any are shorted.

Let me know what you find.

Posted on Oct 05, 2008

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