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-   -   PPI A404 Amp Repair (http://www.diyaudio.com/forums/car-audio/31663-ppi-a404-amp-repair.html)

jschen 5th April 2004 04:53 PM

PPI A404 Amp Repair
 
I bought this amp used and it was already damages and repaired once, of course the seller did not notify me of this. Anyways when I received it, it was damaged. One of the resistors was burnt and also one of the transistors was gone. I don't know what the original model number was but it was replaced with a NTE332 transistor. Does anyone know what transistors the PPI amps use? I have seen two model #s on the amp made by MCM

I don't have the amp sitting in front me at the moment but I believe the model numbers were:
2N6490 & 2N6487

If you guys need pictures to help I would be glad to take some and post them.

I have already ordered a new NTE332 transistor, and a few InOne transistors.

Any help would be great

speaker 5th April 2004 07:55 PM

Directed Electronics owns PPi now. Your first stop should be to get a schematic.

speaker

jschen 5th April 2004 09:06 PM

They don't give them out, but I think I have it figured out...just going to replace a couple of transistors.


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