Acer Aspire 1690 ultra high temperature

Hi everybody,
I've read all previous posts about this problem.
Also my pc turns off suddenly or smells like it's burning
I just want to solve it in this way (for the pc owner is not a problem).

I'm gonna change the termal paste ( blu and red arrow --> processor and graphic card) but I will not replace the big heatsink (yellow arrow), so I will leave opened the zone highlighted by violet square.
I will replace the processor fan.
I've a big doubt: graphic card doesn't have a thermal diode to measure temperature ... so do you think that it can melt without heatsink ?!?!?
It will be refreshed by open air.
let me know what do you think
thank you in advance !

anton

 

I ran my x600 @ 600mhz rather than the stock 400mhz without issue. However your arrows are a bit wrong.

Blue = CPU
Red = Chipset
Yellow = GPU heatsink

I'd advise taking the GPU heatsink off and repasting.

Also be sure to clean out the fins of the heatsink.

 

I don't want to replace neither the heatsink nor the black cover in the violet square ! thanks for your reply but it's not an answer to my question !

 

No, they put that heatsink there for a reason, your system will fail if you don't have it there.

Sorry but I did not realise how basic the question was.

 

Meaker is right- if you remove the heatsink the whole thing will either stop (emergency thermal shutdown) or simply burn.