Replacing an Acer 8942G motherboard

I am looking for some advice - I tried searching threads and couldn't find anything so if there is another post I apologize.

I have had my 8942G for approx 2 years and love it to bits - got it working just the way I wanted. Unfortunately a couple of months ago it started over heating and shutting off when it reached it's heat limit. I took it to a computer engineer who informed me that my Fan was running off it's apex and that the overheating was 99% the GPU.
He was going to charge me in the region of £500 for parts only which I think is expensive.
Is there any where that I can get a new motherboard that is compatible with the 8942G and also the heat-sink and fan which appears to be 1 unit to me..... or can the fan be broken off and a replacement fan only be bought and attached.
I appreciate any help as I am not really in a position to go and buy a new laptop for gaming.

Thanks

Wullie

 

Did you try the simple solution- re-applying the thermal paste on both CPU and GPU and cleaning the radiator?
Also did the engineer in question open the laptop or not?

 

All that has been done and yeah the engineer completely stripped and cleaned out the laptop. The area that the GPU is housed still becomes incredibly hot and the laptop stil shuts down. There is a very slight ticking noise which suggests that the fan is off it's axis but I see that it appears to be sealed onto the heatsink assembly. Thats why I wonder if it can be broken off and a fan only placed on it. At the end of the day I need to replace the GPU and the easiest option I believe would be a new motherboard unless someone else knows anything different?

Wullie

 

If it works fine and just overheats I see no reason in replacing mainboard or video card. Have you thought of doing some mods to the computer to improve cooling?

I haven't seen the internals of this computer, but some manufacturers put a thermal pad between GPU and the heatsink. That pad can be easily replaced by a copper plate which will significantly increase the heat transfer.

Also, Acer and HP are known for sealing the air vents to make the computer quieter. One of the options could be to drill holes in the case to increase the air intake. Something I've done to my laptop recently or this sometime ago. You will need something on a grander scale, but it should give you an idea.

Could it be that there is something wrong with the cooling fan? Maybe the GPU chip is not making proper contact with the heatsink?

 

Thats the whole problem it is only lasting anywhere between 90 secs - 5 mins.

I have looked and the engineer has even made sure and applied new thermal paste - everything is in place and where it should be.

It is definitely looking like a faulty GPU
I'm guessing by the lack of replies that my question is not able to be answered.

 

did you ever gat a fix for this, I am in the same boat now