Hi guys need small help to identify a problem which just occurs after installing the setup



With the setup installed , was about to do the tuning , and I suddenly heard a loud ‘pop’ coming out from speaker or maybe amp and suddenly the car feels like voltage drop where the rpm went down around 400 and raise back again . And I notice the amp started to smoke and thank god me able to quickly cut the switch off (main battery) .

I just let it cool down the next day I opened up the amp and I notice there’s few transistor fries which I googled it’s the mosfet controller . Not really sure internet jargon in that foreign website but can anyone address me

1/ What could possible went wrong before the tuning and made then transistor to fry ?
2/ Could it be overload from alternator (70a) ?
3/ for the test I didn’t fuse the 12v cable from battery ,could it be some sort of overload to the amp

I’m also uploading image of the transistor here

[attachmentid=10904819][attachmentid=10904820][attachmentid=10904821]

This post has been edited by makaveli: Jul 14 2021, 07:43 PM

Basic check. Did u terbalik the +12 and ground?
It's also possible the amp itself got issue

My guess is the 3205 MOSFET touching the bare heatsink

Try claim warranty? If no warranty just send for repairs.
The MOSFET is rm5 so shouldn't be very expensive to repair.

This post has been edited by fireballs: Jun 7 2021, 11:14 PM

No didn’t .
It was doing good for atleast 30 min plus , was going thru dsp menu .
Notice it got so hot to touch and the smoke are out from the mosfet .
Do you think this could occur without using fuse block ?
Because the car electric like went down for a second and then only the smoke started coming out .