Satellite L665D - No POST after LCD cable Strip

I have a Satellite L655d S5550 and a few months ago, it has no video after a break caused by the process of closing LCD I've ever done.

After her, I try:
a power draining
turn to the memory of RAM slot
Turn on with just a memory
Odd and band and reaset hdd cables
Clear CMOS

None of this works, the computer displays leds and its hard drive, cooler works normally but still no video.
I forgot for a couple of months so I try to fuel once and 2 times it displays video normally, but after the third time without problem the video returns.

After it, I opened the laptop and with it under tension, I did strip the cable of the LCD of the motherboard, then the system closed immediately.

So, since it does not supply the computer power with or without baterry.
The power led flashes and don't fill POST heatsinhk does not work.

Any idea? I fear it's a motherboard burned, because I am of the Brazil and there is no replacement for it.

I think that there is a hardware problem but from my point of few Interior/LCD display isn t the troublemaker.

The point is that even if the internal screen would be defective, the laptop must turn on correctly and in an external monitor, it should be possible to use the laptop.

For me, it seems that the motherboard or card mother as GPU (graphics processing unit) could be faulty.
This malfunction is a worse because the replacement of the motherboard is a very expensive procedure and I think that it s not worth to fix it in case the warranty isn't valid more.

Tags: Toshiba

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