What Happened to this amp?

[MPI 10+ year member]

So I recently purchased a Rockford Fosgate P400-2 amp off of ebay... after installing it I turned my vehicle on and the blue amp Power indicator came on as it is supposed to, then my speakers made a few strange noises, the blue light dimmed and then smoke started pouring from the amp... (this all happened in approximately 5 seconds) and had all the gain and volume levels set as low as possible. This seller has good ratings and it was listed as being new (wasn't in the shrink wrap, but was still very clean and no signs of use) I opened it up so see what had happened in there and 4 of the MOSFETs had fried... does anyone have any ideas as to what happened? I was running it with another P400-2 and a P500-1BD (both turned on just fine) they were all wired in the same exact way.

Any ideas would be great...

The mosfets that got fried are marked with lightning //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

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[misfit138 5,000+ posts]

it done blowed up //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[MPI 10+ year member]

I know that.... But WHY would it just die for no good reason?

 

[Brian_smith06 10+ year member]

fosgate?

 

[misfit138 5,000+ posts]

I know that.... But WHY would it just die for no good reason?

It's not for man to question the nature of the lord thy god. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[MPI 10+ year member]

Well Its a good there going to refund my money //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[VWBobby 10+ year member]

If everything was wired exactly the same way between the amps you listed - it would have to be a dud. RF and most other manufactures bench test their amps prior to packaging, so I'm surprised you would have a failure from a "new" amp. I'm guessing either the amp was tampered with, shipping damage, or some other installation error. The chances of a new amp frying like this is extremely slim, but I suppose it does happen.

 

[MPI 10+ year member]

that's kinda what i was thinking