tenaciousNoob

I emailed the company to see if I can get a voltage schematic. We'll see how their customer service is. I wonder if I could even send one in and have them tell me whats wrong with it if I can't figure it out

Thanks for the replies. I took off all the transistors on all the amps and tested them all. in input fets and diodes tested ok., more than half the output irf640s were blown. So, I pieced 8 working ones together and put them on one amp. It goes to protect mode then shuts off. Also, I have it powered by an xbox 360 power supply pushing a bose accoustamass home theater sub just to test. Should I try buying new fets and see what happens. Thinking about making an osiloscope to test it properly. Any suggestions?I've at this for way too long. Thanks.

So I inherited this situation but I'm too deep now to give up. From what I understand, there was one `1200 watt audio pipe hooked up in dudes car. He blew that one. Then he put 2 more in and blew both of them immediately I believe. Seems like a short somewhere in his vehicle to me but I'm no expert. So I went through and tested all the transistors and found multiple output mosfetts to be blown on all 3 amps. I pieced enough "good" irf640 mosfetts together to hopefully make a working unit but I have a short someoene because It bounces bavck from protesct to power. Can anyone help me with this?I have more hours in troubleshooting these things than I care to admit. THank you very much