Acer 8935g overheating [solution]

Hello everyone! Just wanted to share my experience (and joy heh)

The thing is - i upgraded this laptop with Core 2 Duo T9900 cpu (3GHz) and Amd HD 6700M graphic card... and got really powerfull heat impact. I underclocked cpu to 2Ghz (lower than the original cpu lol) and made some holes in the laptop case's bottom side, directly under fan. Still i had to put it on the cooling pad or at the edge of the table before running games. That did get me more time before overheat power-off rather than solve the problem.

Now, i did some manipulations and now have 90*C (highest, usually 86) on full cpu/gpu load, no underclock, etc. (90*C on 3.0Ghz now vs 101*C and slowly going to 106 and power-off in 10-15 minutes on 2Ghz before. every 10 minutes windows+d helped a bit to drop the load =) )

Firstly of cause replace thermal paste and all the thermal pads (i was missing one in the spot where heatpipe touches the gpu heatsink) and disassemble and clean the cooler radiator from the inside - nothing new here, but what i wanted to share - here's my redneck modification of the cooler:

Also, don't get me wrong - i cleaned the cooler for the first time in 6 years, so that gave me more cooling as well, but i still think this is a solution worth to try - i have no idea why the cooler is open on the top - i mean follow my thought - when fan sucks air into the laptop (from bottom side) - most of the heated air goes back into laptop through the top rather than going out through the radiator - i tried to simulate this air flow with a hair dryer)) (maybe someone can explain me if i'm wrong here - but i looked carefully where could the air that goes up might be needed to cool something and found no answer)

On the other hand i also thought that the shape of the fan might be such way to have intake of air from the top and from the bottom - but in this laptop - that really makes no sense for me - there are no ventilation holes at top of the laptop case - believe me i looked for those =) - so it just intakes heated air (you know, heated air goes up, cold air goes down) or something?

It also might have something to do with the holes i made:



I've seen some video on youtube some guy doing that holes and decided to try myself.

Anyways just sharing my experience if you had the same problem (it made me really sick and mad sometimes during couple of years :-X), but please feel free to criticize if something is not right here =)

 

The top hole is there to create airflow inside the whole case, so everything gets a bit of cooling.

Also, what thermal paste did you use?

Your heatsink in the photo is still pretty dirty, those cooper plates are loaded with "dirt" that you need to scrub with some napkins and IPA/rubbing alcohol until its nice and shiny.

 

Ah i see, thanks =) Anyway i don't feel the laptop to be hot now, but did before =)

I used Arctic Silver 5, or that's what the package said - i ordered it from china. Yes, when i disassembled laptop, thermal paste was completely dry, i didn't like it as well. I did clean up with wd-40 and applied some noname paste - didn't have anything better that day near my hands unfortunately.

 

WD-40 is oily, you need something like alcohol to clean the heatsink and the cpu and gpu dies.

Search for Artic-MX4 or MX2, its cheap and pretty good for laptops and its not a boutique brand, so its more easy to find.

And dont worry about the holes, I do that in almost all my laptops

 

Yes, wd40 has some sort of lubricant among other components, but cleaning with dry earsticks/napkins after did the job =) Also i remember i used fuel for zippo lighters - in my humble opinion that's the best liquid for this kind of job =) I just can't use alcohol for that sorry xD
Ah, thanks, i'll try to look for mx4 =)

 

My solution to overheating was this : I bought a piece of wood and this is what i have done with it... Cheers