PG x1200.1 repair question.

audiophyle_247 · Post by **audiophyle_247** » Sun Jul 27, 2008 8:37 pm

Bought a x1200.1 locally from a "friend", and long story short there is no output.

Inside everything looks cherry except one of the output mosfets, where one of the legs is charred.

Part number is IRFP360LC, which there are a total of 8.

Now I can only find a IRFP360LCPBF.
Specs seem to be the same as far as I can tell, but I am curious, will I be fine replacing just the one bad mosfet? (or do I need to replace all 8?)

Never had to repair an amp before, so if its a noob-ish question please bare with me.

Thanks.

Thumper88 · Post by **Thumper88** » Mon Jul 28, 2008 1:51 pm

PBF means it is lead free (Pb = Lead).

Need to replace all of them...if one blew up, the others aren't far behind or are already shorted/open...just not visibly.

Replacing the transistors themselves might fix the problem...but it doesn't usually work out that way...

audiophyle_247 · Post by **audiophyle_247** » Mon Jul 28, 2008 3:32 pm

If I replace all 8 it will run about $50, so are you saying there is still a good chance it wont work after this?

I assumed the woofer or wiring must have shorted which could short out the amps output. The entire circuit board & parts look identical to a working one (I have 4 at work) and there are no unusual marks anywhere except the one mosfet foot. I have taken lots of amps apart & have seen how many parts have failed in some, but I really had to hunt over this entire board just to find the damage I did (which is why I decided to repair it).

Post by **AVICJR** » Mon Jul 28, 2008 3:35 pm

You could always send the amp to PG for a flat rate fee if you think the parts will start to add up. It may be cheaper in the long run to just send it to them.

audiophyle_247 · Post by **audiophyle_247** » Mon Jul 28, 2008 3:57 pm

Yeah, thought about that. Have not talked to my shops PG rep since they switched to their own distributor.

Post by **AVICJR** » Mon Jul 28, 2008 4:23 pm

You can deal with PG direct rather than go through the shop. Just a thought.

BTW: how much is your shop selling the X1200.1's for?

audiophyle_247 · Post by **audiophyle_247** » Mon Jul 28, 2008 4:43 pm

Not selling them, they are from/for our demo van. Pulled them to sell the van for a new demo ride. 4 x1200.1's, 2 x200.4's, 8 xenon 12's, & 6 pairs of xenon components, 6 PG caps, PG bass cube, and all PG wiring.

It was badass

& will be again.

Figured I could get away with a better deal on repair if I go through rep