posted
I have a USAcoustics 2080 amp, delivering 280 watts (bridged) to my 10" Infinity Perfect sub. I was pretty happy with the amp's performance, and the price was right. Until one day when it quit while I was driving to work, listening at normal volume. Later in the day, I found that the fuse on the amp was blown. When I replaced the fuse, the new one failed immediately. I put in another fuse (the correct amperage), and smoke poured out of the amp- a mosfet transistor had blown. I replaced the transistor, and it still doesn't work. There isn't any obvious damage to any of the circuits or components. I got it to work for a few minutes the other day, but then I removed it from the car to re-install the bottom cover, and (of course) it wouldn't work again.
I don't want to take it to the shop if its a $1 radioshack part. Where should I start looking for short circuits, and what is the best way to locate them? Any other advice? Thanks!
posted
If a fet blew, and lots of smoke came out then i doubt thats the only thing that blew. nothing else may seem obvious, but if one things blows it will take down others with it. look for burnt things, and smell for them too. follow the path of the fet. in order for it to blow there had to be lots of current running through it. so other things should be damaged or have gotten pretty hot. good luck. if its nothing serious a local repair shop should be able to help you...
------------------ I respect any sub that can make me pass out.
posted
i've had the same troubles i blew an audio gods 700 comp. amp mofsets are pretty cheap replace all of them if you can afford it. you may have to get a multimeter and check the resistance of some of the resisters. you must check the ohm load through them. if they were heated badly they will change resistance. like he said look for anything discolored or cracked. even the tiniest crack can screw you. sometimes they are impossible to see by eye and you must test them.
good luck!!
------------------ DRIVE LIKE YOU STOLE IT!!
Posts: 918 | From: Detroit, MI USA | Registered: Jan 2001
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