Sunn Coliseum 300 Broken :( !help!

[Schecter006Elite]

Hey guys, Haven't been on in a long long time, but I figured you guys could help like always! I've had this Coliseum 300 head for about 2 years now, I left it in my car for about 2 weeks, went and tested it out on a new ampeg cab and when I got home it wasn't working!

It never had any issues (maybe some dirty pots) and I even played it pretty loud often and never had a problem. It worked great in the store and the rig sounded good, but when I got home it started making uncontrollable crackling sounds without an instrument plugged in.

I took out the chassis to take a look, dusted it and took out the fuses to look at them, and put it back in to test again and now the power limit, compressor, and gain light (all the lights on the head) are constantly lit ad there is no output at all, not even hum. I don't smell smoke, and I think if we make a good enough guess I can try to fix it. I'd take it in, but the closest place is 2 hours away, and if anyone thinks they can help please let me know what you think and I can try repairing it myself. I'm fairly competent.

Thanks for the help!

(yes, i know leaving it my car wasn't the best idea)

[ItsaBass]

I'd look around for busted solder joints. Something may have shaken loose in the car. If that fails, maybe time to take it in.

[Schecter006Elite]

I will check the solders now and see if I can tell anything! bump!