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sony grv670 fan

Posted on 2004-04-27
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1,105 Views
Last Modified: 2007-12-19
i have a sony laptop grv670.  it is getting overheat for the past few days that it randomly shut off.
i download hmonitor and the temperature sometimes goes to 190 F...

i opened up my computer, i saw that my main fan (*top right*) is working,
however, the the other small fan (*top middle*) is not working..

the text on the top of the middle fan is 'DC Brushless UDQF YEH13-SO DC5V 0.23A 3217B'
does anyone know where can i buy that fan?  i went to sony support and they told me the
price to fix is about $300...  which i can buy half a new desktop computer...

also, i find out lapcool http://www.vantecusa.com/p_lpc_201.html from vantec.
just wondering if anyone used it before and is it useful??

Thnx
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Question by:bionicblakey
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Expert Comment

by:ChrisSchumann
ID: 10931367
Digikey is your friend: www.digikey.com 800-DIGI-KEY

The fan is a Panasonic, and Digikey sells a lot of different models. Call them and let them know what you have, and they should be able to sell you a replacement for less than $30. You seem to be comfortable taking your laptop apart, so you should have no trouble replacing a fan.

I searched Panasonic's web site, and I couldn't find that model, so I suspect it's a Sony-only OEM fan, but a suitable replacement should work. I'd try it on my own system.

The tricky bit is the fan should be rated to move the same amount of air, and you'll have to guess at that.

As for the laptop cooler, don't get one just yet. It will not help the one chip that needs cooling unless you couple it thermally to the cooler. Without that fan being replaced, that chip will still get hot and shut down your machine.

Get your new fan in place. Then see if a system cooler is right for you. It may extend system life... it may not. And I think it would be a hassle to carry it around.
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Expert Comment

by:ChrisSchumann
ID: 10931420
Of course another solution is to buy a used broken laptop for parts and swap in the mainboard, or buy just the mainboard. eBay has a lot of laptop parts, but there don't appear to be any motherboards for that model for sale at the moment.
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Author Comment

by:bionicblakey
ID: 10932533
thnx chris....

i tested it again today...

when i first start my computer, my 2nd fan works about 10 seconds.  then it shuts off...

anyway idea why is that??

thus right now, i am not sure is it really my 2nd fan is not working or not...
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Accepted Solution

by:
ChrisSchumann earned 500 total points
ID: 10932672
On my laptops (IBM ThinkPad 600E and 600X), all fans start at power up. Once the BIOS starts doing its self-test, and gets the temperatures, the fans turn off because the devices are cool and don't need the extra air.

Perhaps the fan is just fine and something else is wrong.

Fans usually cool heat sinks, which then cool the chips. The heat sinks have to be thermally coupled, and this is done with "goo" (highly technical term) or as some amateurs call it, thermal compound. It conducts the heat from the chip to the heat sink so the fan can do its job. If the goo doesn't touch the heat sink, the chip can overheat. Check both your fans' heat sinks to ensure they have good contact with their chips. Go get some more good goo, but don't use a lot.

Another hazard is dust. If the heat sinks get clogged with dust, they will not be able to move as much heat away from the chip. Get a can of compressed air and blow out the fans and heat sinks and all the vents on the laptop case. There should be an air intake and an air outlet.

The other thing that could be wrong is your temperature sensor, but if the software you try gives you readings that change and seem to correspond to shutdown, then that's probably OK. But it has to have good contact with what it's measuring, too.

Another thing that could be happening is that either fan has failed, but only so it doesn't work as well as it should. Like a big power supply fan that makes a lot of noise, it still spins and moves air, but nowhere near as much as it has to for things to remain cool. In that case, you might have to replace the main fan, or both.
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Author Comment

by:bionicblakey
ID: 10934488
thnx chris...

i just called sony support...

they told me that my 2nd fan did not work may be because of my power setting..

well, i did have my computer reformat and reinstall, but i did not re-install the recovery cd because i want to install window xp prof instead of window home...

i am wondering could this do with the heat sink, and fan problem...

again, thans for all your help
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Expert Comment

by:sparks333
ID: 11138874
Hey, Bionicblakey
I am having exactly the same problem with my laptop, but your message wasn't all that helpful (no offense) to me. WHat power setting is that, exactly? Any help on actually fixing this thing would be greatly appreciated!
Sparks
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