2. amps-preamps
  3. 1071556749

About Mosfet

Hi Audiogonians, Merry Christmas.

I got some questions about MOSFET.

First I would like to know how can one damages a MOSFET? Can wrong connection from powersupply kill it? Next up is how does a damaged MOSFET sounds like and how can one knows which one is dead if there are more than one in a poweramp? Finally, if there such a thing as life span of a MOSFET?

Equipment-Adcom GFA5500. Problem-One channel sounds like a weak reception radio. Cause-could be wrong connection. Can someone help me to trobleshoot this?
rainchild

Showing 2 responses by rainchild

rainchild OP
31 posts
 
Hey guys,

Bad news, I changed the dead fuse, amp was ok for a few mins and spark starts coming out and now the Mosfet of that faulty channel ready blown. Sent the damaged channel PCB to a nearby technician. Ask me some questions. He thinks it is because I didn't screw back all the screws that fasten the mosfets onto the heatsink. That's the price of laziness.
rainchild OP
31 posts
 
Thanks guys,

Oohlala, Bombaywalla knows so much, how I wish I could be like you. I'd checked and yes, I got a 8A blown fuse. I'll replace it tomorrow and see how it goes. Thanks Unsound. Like an AM radio with bad reception. Is that what you've experienced?
More to discover