MTX MiTEK Thunder4250D blown

[kevinkr]

Originally Posted by mbates14

<snip> do the caps look like they need changed?

They look like they got real hot, and the tops appear to be bulging which to me signals a need for immediate replacement.

[mbates14]

yea they are overheated alright, but why?

[Perry Babin]

Typically, they overheat when the amp is driven into a speaker load lower than lowest impedance load recommended for the amp. They can also fail when the inductors short or otherwise fail but yours looks like it's in good condition.

[mbates14]

someone probably "pounded" the hell out of it and that was it.

[brandes.cm]

It looks just like a 421D that I have. I marked the pic with the parts that were bad on mine. The three caps on mine were bulged and the two smaller ones that flank them were blown off the board. The opamp was the main cause of my output problems.

cory