Do you guys fix diagnose/fix audio amplifiers?
I bought an Insignia 1000 Watt amplifier for my car. Until a few weeks ago, it was powering my 15" Pioneer Premiere Subwoofer. It worked fine for a year or two but a few weeks ago, while I let my car idle while I was in the bank, the green LED signaling that the device is working changed the red "protect" light. By the time I came back out, it had stopped working and nothing I've tried has been able to fix it and I can't diagnose what the problem is. I double and triple checked all the exterior plugs and connections, wires, etc. and I got nothing.