I have an MTX 6500D amp driving my 12's in the trunk of the Caddy. Lately, it wouldn't come on when I first started my car while it was hot out, and then after about 15-30 minutes, would start working. Now, I can't get it to come on at all. I verified 12 volts at the power source, at the remote source, and a no-resistance ground. The 3 25A fuses in the thing are fine too. Anything else I should check or should I just write the amp off as finished?

 

fuse holder on the main power wire to your amp from the battery, thats what happened to mine, might just be loose, if its cracked or something then its probably time to buy a new one, i got a really nice one 20 bucks Just saving it for a rainy day.... the type that gets under your hood and fills that fuseholder hahaha.. but a guy in need comes first.


yeah.... just check it..

 

You verified 12v at the amp end or source end? Also, might want to just try some new 25a fuses in the amp...they can "look" fine, but in actuality be blown.

 

Yeah, my setup is one power source from the main battery to a breakout terminal on a secondary battery in the trunk, so power isn't an issue. The V/O meter showed a solid 12 volts at the + terminal on the amp. Plus, that battery powers the mids/highs amp right next to it, and that thing is working fine still.

The fuses had continuity, but they've been in there since I bought the amp over 5 years ago. Fuses sound like a cheap investment before writing the amp off as toast though. Shit, I could just pull the fuses from the amp right next to it and try 'em since that amp still works.