Redoing acer 6935g thermal compound

hey guys just making sure. i just remove the compound from these 3 places and apply a dot (using mx2) to the centre of the gpu cpu .. and whatever the 3rd thing is and put the heatsink back on and it should spread correctly?

Also where i drew the red square.. that shiny thing.. is that also thermal compound? I should try remove that as well? And does that mean it doesnt matter if it oozes out and over the edges a bit?

thanks

 

Don't count on the compound spreading itself correctly. It would have worked if you mounted the radiator exactly parallel to the core and just tighten the screws however with notebooks you will have the radiator contact the core at an angle (because the end of the heatpipe with the actual radiator "brush" has to be already inserted and only then do you actually lower the rest to make contact with CPU, GPU and chipset)
Use a thicker sheet of paper of an old credit card to cover the core.

As for what's marked just clean it with alcohol- no worries here.

PS Hope it’s understandable

 

That clear substance is part of the process to attach the core to the PCB, I would not remove it.

 

Quite frankly I can't see what it is but this part can be safely cleaned with alcohol either way.

 

Thanks guys. (lol at meaker.. life saver)

I have an old credit card lying around so ill use that. that 3rd thing.. no idea what it is - it has no marks of thermal compound on it but the heat sink has a -complete?- patch of thermal compound on top of it .. the pink patch in the first picture. should i leave that as it is or go on ahead and put the mx2 on that as well?

does it matter if the thermal compound over the edges of the processor or gpu?

 

Leave the thermal pad on the chipset as it is- ot doesn't have to be replaced with thermal paste.

Some of the thermal paste almost always gets over the edge of the core- it's not a problem.

 

thanks again and last Q. Im getting the t9900 .. are the temperature sensors located on the processors themselves? because with my current one im getting constant temperatures throughout the day (they dont deviate even a degree) so somethings wrong and was wondering whether the new processor would correct that as well

 

Temperatures are measured and reported by CPU itself however if these are accurate depends also on a BIOS.
In some laptops temps are not accurate to say the least (i.e. reported CPU core temps are lower than the room temperature).
The new CPU may or may not solve your problem- depends on whether it was a general BIOS bug or it just didn't work properly with your previous CPU.

 

Put the new processor in.
kept turning off at first but processor didnt feel hot *cant tell temps since readings are still messed up so i reapplied the paste and it seems ok now. think i may have put a bit too much this time

 

Looks like a BIOS bug. Have you tried updating to the newest version? It is probably a bug in DSDT table where it fails to return the correct temperature of your CPU. If you can, upload a dump of your DSDT table (google for it. You can use RWEverything and dump ACPI to a file) then I could maybe have a look at it and see if temp reporting can be fixed.

Also have a look for a modded BIOS for your laptop in the BIOS mod thread here on Acer forum. Maybe this issue has been fixed already.

Cheers!

 

I did at one point update to the latest but things didnt work so great.
But just before i read this i updated one version higher (1.10) from the original (1.06) and still nothing. GPU temps have always been working for me though

Getting annoying because i want to know how well i applied the thermal paste and how cool the cpu is running . Also everytime i restart i get a new temperature and itll stay that temp till the next restart

Here is the ACPI file. Thanks for the help

http://dl.dropbox.com/u/9664188/AcpiTbls.rw

hope i did it right.. *something tells me i didnt :/

 

Laptop shuts down from over heating i think
Have i even applied it correctly

http://dl.dropbox.com/u/9664188/20012011080.jpg

 

what kind of thermal paste have you used? i would personally use nothing other than

http://arcticsilver.us/as5.htm

make sure its very even and a very thin layer, i would start again, clean up using acetone or something similar thats not fragranced.

Put a small blob right in the middle of the core (we are talking about the size of a large match head) and spread it out using a credit card thinly and evenly, then reapply the heatsinks

i have just had reapplied on my 6935 and all is well, but i did use arctic silver 5, which is by my opinion superb, its thick and spreads very well

and i would advise flashing the bios to the latest 1.20

 

im using arctic mx2.
You only apply it on the processor and gpu right .. you dont put some on the heatsink?

also how do you mean spread it with the credit card? just press on it with the card or as if i was painting it? and should i spread it to cover the whole of the processor and gpu?

 

According to my quick research, temp monitoring in Acer 6930/6935 models has been fixed in BIOS v1.14. However, I don't see it available anymore (must have been pulled due to other bugs) so download the latest v1.20 and flash it. It should fix your temp problems.

PS: Google reports a bunch of people with similar issue. Lots of posts here on NBR.

Some links with info in case I have to do more research:
http://forum.notebookreview.com/ace...spire-gemstone-blue-throttling-issues-36.html
http://forum.notebookreview.com/ace...ne-blue-throttling-issues-48.html#post5730618

 

http://dl.dropbox.com/u/9664188/21012011082.jpg

Reapplied the paste.. looks better?
priko im now on 1.20 and still nothing
stupid acer

 

It looks OK. Let’s see if it still reboots.
BTW remember that the paste needs at least 100h to be (almost) fully efficient. Shouldn't reboot even at this early stage though.

 

just running it normally it hasnt shut down.
but im wanting to undervolt - the stress test causes it to shut down

 

its looking better but for me personally looks slightly messy, your getting the thermal paste on the right bit it just looks to me too thick, saying that iv never used the paste your using so thats how it may go either way

as for undervolting iv got no idea where to start to be honest, its something im possibly going to look into myself due to throttling

 

Its not shutting down when im using it but then i do that windows experience score thing and rmclock says CPU overheating *i havent messed with voltages* and it justs shuts down

 

Can you run pcmark? or 3dmark06? on a loop basis?

Really strange issue, the fans are all clean i take it?

what did u use to clean the core on the cpu and gpu? are you also cleaning the heatsink aswel?

 

I used the arctic cleaning kit.
Yep fans are all cleaned so is the heatsink.

i ran 3dmark06....but....once to get a score. i dont know what you mean loop basis

is there a way for me to adjust what temperatures the laptop should consider critical for the processor

 

i dont think so, what temps are you currently getting?

as in a loop, i mean run it over and over again, i do this to test overclocking if its stable,

i ran pc mark and if it runs ok for an hour (as it stresses the system alot) i genuinly will think its A-Ok

was everything ok before you re applied the thermal compound?

 

No it wasnt. it was like this before i re applied it as well.
I havent tried 3dbenchmark in a loop

This is getting so dumb now that im actually laughing here.

I put Team fortress 2 on download from steam.. and steam was processing the request i get a notification from rmclock CPU CORE OVERHEATING

 

Crazyness! im stumped, the only thing i would advise, is start over again, take out everything, clean it up, re apply thermal stuff, spread out (like painting) with a credit card, and see what happens

I wonder if your heatsink is actually making correct contact with the Cores, maybe something is bent?

 

Since your laptop doesn't seem to show real temperatures RMClock doesn't have them either- at this point you can't really trust RMClock.
What we know for sure is that if the CPU is overheating it's throttling (it may be throttling without overheating too but that doesn't matter at this point.

Do a test- run 3DMark06 on a cool system, make note of the score then run FurMark (for GPU) and Prime95 (for CPU) simulanteously for some 15 minutes and re-run 3DMark06 again- compare scores.
Or just run WinRAR hardware test for some time and see if the resulting value is the same all the time or if it decreases over time.

As for the paste- it's applied properly. It shouldn't be a problem unless ascottuk2010 is right and the radiator doesn't actually make contact with the core.

 

ok ill run the tests soon.
Should i open it up and see how much of the paste is on the heatsink now? (thatd be a good indicator for contact right?)

 

No- leave it for now. It won't ever settle and get dry if you keep dismantling it.
Since it looked good and I'm sure you've been careful while mounting the radiator it should be good.

 

I have the same problem with the thermal sensor..

The only "clue" is with HWMonitor... TZ00 moves from 54 to 64°c in full load with the t9400.. I don't know if it's a sensor near the cpu...

 

That picture was taken before i mounted the heatsink
but also you know how i kept dismantling it.. what i found was.. there was a square patch (not thick but you could see the edges of the paste on the heatsink where the gpu goes but for the cpu part.. there was just a tiny smudge on it

 

Make cure the radiator screws are screwed tight enough.

 

Tight as they can be

 

Are you sure it doesn't make contact than?
If it really doesn't it's relatively easy to fix- you just need a copper shim just like the ones some people use when they upgrade MXM cards.
It should fit without that though- is the radiator bent in any way?

 

well ive never actually given it a hard look.
whats the best way to find out if its making contact.
should i see if its bend after a couple of days .. once the compounds been given enough time?

-------
ok i couldnt help myself.. i opened it up and now i cant even boot into windows without it shutting down.
Lol jks

there was this wire which was travelling under the heatsink and i figured that would affect how well the contact was between HS and processor.. so i forced the wire to go above the heatsink and now im running a stress test and no warning from rmclock.. will try undervolt now and see how i go

 

Old fashioned troubleshooting. Take it apart, clean off all the heat sink compound, and put a small strip of paper between the heat sink and the cpu and see if it pulls out easy. repeat on all four sides. If you get a side where it comes out real easy then yes, the heatsink is not sitting squarely on the CPU. The purpose of the heatsink compound is only to really fill in the microscopic scratches etc on the surfaces so it only needs to be sub-paper thin to work. In fact, having too much starts to reduce efficiency. I'd say in your previous pic you had it about 4 or 5 times thicker than it needed to be. you should basically get a thin layer you can just about see through on the surface. If any real amount oozes out the side, you used too much and / or didn't spread it evenly enough.

But first check to see if it's making good contact when screwed down.

And of course if the paper comes out easy from every side then the heat sink isn't sitting down far enough when screwed down. Shim's the easiest least dangerous answer.

 

thanks sxooter. moving the wire from under the HS seems to have fixed it.
ive been stressing the laptop and no warnings at all.
ive undervolted it too now.
shame i cant see what the cpu temps are.

thanks for the help guys

 

Normally it's us Linux users who get in the situation where we can't see our mobo temps. Although that has gotten way better in recent years. Glad you got it sussed out!