Why is my sound system shutting off?

Hello, i got this powered subwoofer at a pawnshop and supposly its was one of those white van scams. Well i got at a pawnshop for around 50$ and it was pretty good !

It has 1500 Total watts, it sounds pretty good for a kind of small subwoofer.

The real question is that i was having a problem turning it on so i saw a video on youtube fixing another receiver. I was told to heat up the board, so i did and it pretty much turned on ! But when i play it at a kinda of high volume for some time it shuts off and wont turn back on. So basically i have to wait till it kinda cools off and heat it up again.

I heat it up with a blow drier directly to a long ish chip that is around 3 inches long and 1 inch wide.

If anyone has some suggestions please comment, thanks !

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Update (08/09/2017)

Right below the sub woofers magnet is the chip that i was talking about !

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@a_f_yt_not sure what you are heating up. Post some images of your boards etc. with your question so we can see what you see. Use this guide Ajout d'images à une question existante for that

If it is part of the White Van scam you know that you have issues with inferior parts and schematics will be useless.


ok thanks, i will upload some photos soon


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