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Laptop Cooling Problem


I have an older laptop, a Toshiba A45-S151 and it has recently developed a bad fan problem. Either the fan does not work at all or when it does it runs extremely loud. I believe the bearings to be worn out from the 3 years of constant usage.

Unfortunately I cannot seem to find any documentation anywhere showing me how to access the main fan. I've pulled the thing as far apart as I could figure out to do without detailed specs (Toshiba's idea of 'detailed specs' is laughable) or diagrams and still have not been able to get into that small compartment.

I've upgraded the RAM and the HDD in the past, I've also cleaned the heat sink and 'cleaned' the inside with compressed air from time to time. Oh, and I've applied new thermal grease to the heat sink twice in the past. This knowledge however does not extend to getting to the fan.

Do you know of any documentation that could help me see exactly what I am doing wrong so I am no longer prohibited from replacing that part?

Posted by lostinjapan on

  • 2 more comments 
  • lostinjapan Oct 30, 2007

    I appreciate you taking the time to respond, but I disassembled it as much as I could figure out to do based on screws, etc. and still could not get access to the fan. Access to everything else but.

    I turned it over to 'the professionals' (meaning the people who have access to the assembly guides) 2 days ago, so really don't need any more assistance in the matter.

    While I have many years of exp with computer building/modding/programming/etc., when you cannot find where something attaches and you don't want to push too hard on something (that the assembly guide might be telling you to push hard on) because you don't have the assembly guide and don't want to risk breaking are stuck with letting others do what you know you are capable of.

  • Anonymous Jan 16, 2008

    Yes i have te same problem with compaq armada e700.

    I think that is a software problem because te cooling fan work very fast when the system start but not when the processor work very hard.

    Some one help me?

  • ecb2 Jun 03, 2008

    I have a Toshiba A45 S250 laptop with very noisy cup fan while trying to get to the fan I cannot take the bottom cover off something seems to be holding it and I cannot see any more screws to remove. Any body have any ideas ?

  • eloitsmee Nov 22, 2008

    I have a old laptop, Dell inspiron 7500, and the fan seems to be running fast ever since i turned it on so it can't possibly be hot. weird. Some please help me. Note: I got it off Ebay about 2 years ago.



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Chuck Gluth

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Don't think you will find any documentation online to help you disassemble. Unless someone around here has some Toshiba field service manuals in pdf form.

Sounds like you just need to replace the fan. They do go bad over time. Also, don't used high pressure compressed air to clean out a fan. Unless you hold the fan still using a small screwdriver. The compressed air, if too much, will ruin a fan's bearing if you let it spin freely while blowing out. The canned compressed air showed be ok though.

You can search on ebay for a replacement fan, might be used though. Could do a google search for a new one. Somewhere like

And I think the A45 may have two fans in it. If you can get inside of it, which sounds like you have allready, then you should be able to easily identify the fan(s).

Posted on Oct 29, 2007

  • 1 more comment 
  • Chuck Gluth
    Chuck Gluth Oct 29, 2007

    Just a few quick tips...  sit down and methodically take the thing apart. It's pretty simple. Look for hidden screws... also catagorize the screws you take out into little cups. Like, base screws in one cup, motherboard screws in another cup, etc.. it should come apart fairly easy.

    I found a guide online that may assist you...

  • Chuck Gluth
    Chuck Gluth Oct 29, 2007

    thought the above guide is for hinge replacement, it may help with disassembling... check the rest of the site out for other "how to's" ... may also help you...

  • Chuck Gluth
    Chuck Gluth Oct 30, 2007

    Not a bad idea :-) ... when in doubt, let someone with experience tackle it. Beats breaking something else anyway. LoL.



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