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Thread: Laptop fan problems continue, homemade moving parts lubricant?

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    Gold Member Marcos's Avatar
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    Laptop fan problems continue, homemade moving parts lubricant?

    Wish i could simply replace the fan but the part that the fan is contained in/is part of costs something like £80.

    The fan has been chugging along and lately occasionally scrapes somewhere making a fairly loud noise.

    I took it apart, blasted it with air, examined it. Not sure really, i think the last thing i can try is to somehow lubricate it as the noises it makes sounds like its dried up and not running smoothly. It still runs, it still cools.

    Unless someone can think of a better solution

    Oh, also, any shops that would have silicon grease that i can run into? Or something, if not, can i use something household?

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    Try Maplin, they will have silicon grease. Or you could spray with wd40 or dribble in some light machine oil.

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    Almost in control. autopilot's Avatar
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    Olive oil. Fairy Liquid.

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    Formerly known as Viet Cong Zombi and tuone
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    Don't listen to dangerous, use a big greeny instead. Go for a good jog until the tendrils of phlegm are almost life-threatening and then the chugg up a nice lump on to the fan.
    High-quality mineral oil for bikes is probably the same thing it came with, see if someone's got some oil from a shaving kit. I know Dell has complete engineering instructions for how to service laptops online, but it's a all day mission organising screws and bits immaculately. hard work for even a really experienced systems fiddler.
    see if the noise changes if you push the the cap of the fan blades down a millimetre or pull it up with a pen 1 mm. How come you can dismantle the fan but can't replace it? If you can get the fan blades off you should be able to glue whole new thing in place perhaps?

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    Gold Member Marcos's Avatar
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    Quote Originally Posted by CluelesPasty
    Try Maplin, they will have silicon grease. Or you could spray with wd40 or dribble in some light machine oil.
    This link says WD40 is a nono:

    http://insight.zdnet.co.uk/hardware/...2135514,00.htm

    Quote Originally Posted by dangerous_dom
    Olive oil. Fairy Liquid.
    Serious?

    Quote Originally Posted by viet cong zombi
    Don't listen to dangerous, use a big greeny instead. Go for a good jog until the tendrils of phlegm are almost life-threatening and then the chugg up a nice lump on to the fan.
    High-quality mineral oil for bikes is probably the same thing it came with, see if someone's got some oil from a shaving kit. I know Dell has complete engineering instructions for how to service laptops online, but it's a all day mission organising screws and bits immaculately. hard work for even a really experienced systems fiddler.
    see if the noise changes if you push the the cap of the fan blades down a millimetre or pull it up with a pen 1 mm. How come you can dismantle the fan but can't replace it? If you can get the fan blades off you should be able to glue whole new thing in place perhaps?
    I'll try tesco tonight for some sort of lubricant, and then halfords tomorrow

    I have been able to take the blade part of the fan off, it looks pretty simple. But the base is stuck onto the heatsink component which is quite large and looks custom.

    I'd say its about 40mm, and obviously not a standard desktop fan design, its that other carassel type fan. No idea where to get a replacement
    Last edited by Marcos; 16-04-2005 at 08:16 PM.

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    Almost in control. autopilot's Avatar
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    Quote Originally Posted by Marcos
    Serious?
    Well, not too sure about the Fairy Liquid thinking about it now. But it is a great lubricant for many situations. Especially moving plastic parts.

    Olive oil will probably be good though. Don't do it if your not sure though. You might need something thats ok of electrical cicuits, i think olive oil is ok. But please make sure

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    Formerly known as Viet Cong Zombi and tuone
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    I don't know if olive oil would be as durable as mineral oil like castrol gtx or something. the information of what to use is probably online though.
    inside a fan thos there is a small round doughnut shaped circuit board with a capacitor and a couple of resistors, the little poll that the fan turns round is fixed to the main base and goes through the middle of the circuit board and there's some magnets somewhere in there as well.
    Take apart a couple of fans from some old systems to get a feeling of how easy it is too too unglue and refit everything, it may well be doable.
    I think probably the magnets are fitted around the central poll and there's two bits of metal stuck inside the fan cap.
    experiment with loads of things to try and lift or lower the position of the fans on the pivot, hopefully some grease will do it, probably try some fan troubleshooting tips and tricks/FAQs and support forums from laptops. good luck
    Last edited by prehensile; 16-04-2005 at 09:22 PM.

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    Formerly known as Viet Cong Zombi and tuone
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    Obviously grease it before trying anything drastic.

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    Gold Member Marcos's Avatar
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    Quote Originally Posted by viet cong zombi
    Obviously grease it before trying anything drastic.
    I'll report back tomorrow, thanks for tips

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    i normally use clipper oil. got a big bottle from boots for like £3

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    Do not use WD40, it will do more damage to the fan. The viscosity of WD40 is all wrong, you need quite a thick oil to properly lubricate spinning objects. I would recommend the 3in1 oil that you can buy in a tin, its great stuff.

    Make sure that you get an oil that does not change (much) viscosity with temperature change - seeing as it is in a laptop it will probably get pretty hot and therefore thinner.

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    3 in 1 or a similar light mineral oil. I use silicone grease myself and it seems to work. Fairy is a nono, will dry out and make it worse. Olive oil would work, but it'll probably go rancid.

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    Gold Member Marcos's Avatar
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    Ok, I went with grease, since the fan's shaft is easy to access as it pulls out, it isnt a problem applying the grease.

    It seems to have quietened the louder more recent noise, but its still croaking along a bit. I mean, if the noise was normal i wouldnt be bothered by it, but because i know this laptop was once silent it does bother me since i know this isnt right.

    Here are photos i took while i applied the grease:

    http://www.marcosmoreno.org/forums/images/laptopfan/

    The fan's height is 8mm at the blades/outer edge, and about a total of 11mm max overall height. It has a strange design whereby the blades are offset, you can see it in the photos

    Reckon i could just fix another fan in there? Seems a bit of a mission to get this one out in the first place, looks glued or something to the top of the heatsink. No evidence of a screw.
    Last edited by Marcos; 17-04-2005 at 03:12 PM.

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    Gold Member Marcos's Avatar
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    Here is a vid clip with sound:

    http://www.marcosmoreno.org/forums/i...n/MVI_3556.AVI

    Ignore the loud clunks,

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