3gs won't power on

[gman34]

White 32gb 3gs,
Was out and plugged it into a portable power case for 20 mins, it was working while in it, 2 mins later pulled it out and it wasn't functional any more.

I tried force restart (power + home) DFU mode and connecting it to itunes and it doesn't work.

There appears to be no water damage.

When plugging in it gets extremely hot and nothing shows up, just a black screen.

Any help would be greatly appreciated.

 

[RodThePlod]

When plugging in it gets extremely hot and nothing shows up, just a black screen

If your iPhone is getting extremely hot when plugged in, then do not plug it in any more! You're risking internal component damage and, worse, an explosion.

It's possible the power case you've used has caused this problem.

I'd recommend a visit to the Genius bar at your nearest Apple store.

Good luck!

RTP.

 

[gman34]

can't its jailbroken.

Logic board is for sure the problem

Any way to know what part it is for sure?

 

[blueroom]

Sell it for parts, I assume it's not under warranty.