Amp problem?

[95BlackGA 5,000+ posts]

I was playin' my stereo yesterday, and I was turning the volume down, and I didn't hear my subs playin' any more. I went to check if they were, and nothing. I checked the inline fuse, it was fine. I checked the power and ground. They were fine. I then checked the fuses on the amp. All 3 were burnt up. So, I took a look at the internals, they were fine, no burns (other than the one's that were already on there... //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif ) I checked the mosfets that had been replaced before, and none of them looked burnt. Today, I went to see if it was just something out of the blue, well I put some new fuses in the amp, and I hooked up everything, but the speakers. I turned the remote wire on (toggle switch) and I hear my radio flickering, quite fast, so I look to the amp, and see the protection light blinking. Anyone know what may cause this? I'm fixing to contact dB-r and see how much it will cost to get it fixed right now. Also, the rail that holds the mosfets down, I guess it's a paper/cardboard backing for the mosfets to not touch the metal, well, it was burnt and the guy who repaired it last time, didn't replace it, so there may be some bare metal, could that be the problem?

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[95BlackGA 5,000+ posts]

This is the only thing I was unsure of. Looks like it may be gone. The only problem is that I can't figure what it is, as there's no writing.

 

[Rich B 5,000+ posts]

The board looks slightly burned where your coil hooks up in a few of those photos.

See the brown haze on the green portion of the circuit board?

 

[phyphoestilic 5,000+ posts]

The cardboard is there so the mosfets are touching the top heatsink so it distributes the heat better. Sometimes there is space between the heatsink and mosfet so the heatsink cant really transfer the heat.

Otherwise I have no idea about the amplifier.

 

[95BlackGA 5,000+ posts]

The board looks slightly burned where your coil hooks up in a few of those photos.
See the brown haze on the green portion of the circuit board?

Yes, it looks burnt, but that's just the smoke residue. The guy that repaired the amp before I got it, never cleaned off the board. I can easily rub off that residue.

The cardboard is there so the mosfets are touching the top heatsink so it distributes the heat better. Sometimes there is space between the heatsink and mosfet so the heatsink cant really transfer the heat.
Otherwise I have no idea about the amplifier.

Please explain what you mean? I guess I don't understand this very well. //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif