Importance of clean fans

Atari talk, or the life and the universe and things. Just keep it clean!
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DrF
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Importance of clean fans

Post by DrF » Thu Jul 18, 2019 11:24 pm

Struggling with the heat issues here as it gets hotter something had to be done, my CPU was sitting about high 60c's - to low 70c's.

Now granted it don't actually have a fan on the CPU, but some big heatsink and some rather crappy plastic tunnels thing. The front of the case has 2 80mm fans now while the vacuum was upstairs I decided to vacuum the fans out and.... we now sit at about 37c to 42c that's a huge difference. They never even looked that bad. I also cleaned out the front of the case where it sucks in, very bad design.

Lesson here don't be lazy make your kids get the vacuum then clean the thing :p

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exxos
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Re: Importance of clean fans

Post by exxos » Thu Jul 18, 2019 11:35 pm

I got sick of the dust causing issues on my PC.. I got a big heatsink with like 5mm gaps between fins now...

kinda like this...


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rubber_jonnie
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Re: Importance of clean fans

Post by rubber_jonnie » Fri Jul 19, 2019 8:50 am

Laptops can be particularly susceptible to these kinds of problems.

I did a refurb on about 4 older machines that I use for various tasks, which included a general clean up to remove dust, replacement of heat sink pads and paste, plus a fan clean.

Here are two examples of why you should clean your fans, especially in laptops:
IMG_20190512_142615.jpg
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IMG_20190510_224046.jpg
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This one is out of a laptop that was running permanently as a security appliance on the edge of my network, and it kept shutting down in the hot weather due to thermal warnings in the OS. Interestingly,it wasn't in an area frequented by the pets.

They are also a lesson in why pets that shed fur are not good for your PCs.

Yep that is pet fur, most likely from our cat, all made into a nice thermal blanket to help my machines overheat!!

And of course changing heatsink is not an option here since they are bespoke to the machines.

Hardly any fan activity since cleaning and the machines are much more stable.
Collector of old Atari things:
800XL + Ultimate 1MB, 2x 1010 cassette, 1050 + Happy mod, 65XE (128k +APE Warp) & XC12, SIO2SD, 2600jr, 7800 and Lynx II
Atari 520ST (1Meg), 1040STF long button floppy, 2x 1040 STFMs + Gotek, 2x 4160STE with 32Mhz booster, ROM switcher, Mega ST1, Mega ST4, not to mention various bare ST boards for testing including a PAK 68/2 :)
Plus the rest..
Amiga stuff, Mac stuff, Sinclair stuff etc...
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Re: Importance of clean fans

Post by exxos » Fri Jul 19, 2019 10:15 am

My girlfriends PC use to get like 10 years worth of "dust" in like 2 months.. cat hair used to block the entire PC up.. the CPU cooler would just be a solid block of fur.. simply amazing after only a few weeks.

Fitted the larger 5mm gap fins, not so much of a problem now, clean it out once a year basically :)
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: Importance of clean fans

Post by rubber_jonnie » Fri Jul 19, 2019 10:46 am

The worst I ever saw was a server in a school. It was based on a 486, so shows how long ago, and why I don't have photos of it!

I took the side cover off the case, and it was actually half full of dust, spiders webs, spiders running around, hair and other unmentionables! It was truly disgusting, and unsurprisingly, I'd gone to replace the PSU which had so much dust and debris inside it, it had actually stopped the fan and overheated everything else.

Needless to say, I had to borrow a vacuum cleaner before I could even start!

And no, I didn't hoover up the spiders. I like spiders, but I had to chase them out first.
Collector of old Atari things:
800XL + Ultimate 1MB, 2x 1010 cassette, 1050 + Happy mod, 65XE (128k +APE Warp) & XC12, SIO2SD, 2600jr, 7800 and Lynx II
Atari 520ST (1Meg), 1040STF long button floppy, 2x 1040 STFMs + Gotek, 2x 4160STE with 32Mhz booster, ROM switcher, Mega ST1, Mega ST4, not to mention various bare ST boards for testing including a PAK 68/2 :)
Plus the rest..
Amiga stuff, Mac stuff, Sinclair stuff etc...
www.electronicnothingness.co.uk

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Re: Importance of clean fans

Post by exxos » Fri Jul 19, 2019 10:56 am

Oh that actually reminds me, what I did on my girlfriends PC was hacksaw side of the case and fit a car air filter onto it.. I think it was one out of a mini or something, it was something like 10" square filter.. I'll post some images if I ever find them..

EDIT:

Found a image of my PC cooler...

P260412_16.31.jpg
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4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: Importance of clean fans

Post by DrF » Fri Jul 19, 2019 8:34 pm

I found a pic of what im dealing with, that blue plastic tunnel blows onto the ram, ive never seen ram need a fan before, the PC in the pic is way, dirtier than mine ever was. Apparently there's a super heat sink upgrade for these PCs using proper Dell parts, but I am yet to find the right part, most parts for this thing turn up in US oddly. I dont have the 2nd CPU riser card thing, I think the heat would not go well with that, also there stupid money here but not in US and no one will ship me one :(
t02.jpg
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Better pic :
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This is the upgraded CPU cooler :
Dell-Precision-T3500-T5500-T7500-High-Performance-CPU.jpg
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Re: Importance of clean fans

Post by stephen_usher » Fri Jul 19, 2019 10:37 pm

Oh, those Dell Precision workstation CPU trays are a disaster. The square blocks of pins in the connectors onto the motherboard just stop working after a while. The next generation (7600 series) did away with all that thankfully.
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Re: Importance of clean fans

Post by DrF » Sat Jul 20, 2019 12:13 pm

stephen_usher wrote:
Fri Jul 19, 2019 10:37 pm
Oh, those Dell Precision workstation CPU trays are a disaster. The square blocks of pins in the connectors onto the motherboard just stop working after a while. The next generation (7600 series) did away with all that thankfully.
Add that to another reason not to get one then :lol:
I looked at the T7500 but the extra cost over what already was a huge upgrade (Athlon 64 3800+ dual core to T5500) was not worth it, I do PhotoShop, Corel Draw and this forum so :lol: other choices were the HP XW6600 or XW6800 or I think a XW8600.
I needed ram and lots of it, it worked out cheaper to get the T5500 with 24gb ram than build something from new.

I could do with changing the video card to something fanless as my god does it heat up something bad, it gets the metal of the case hot :shock:
Since I don't play games any old crap will do :D

Might cable tie a 80mm fan to that heat sink and put 1 in the back see how we go.

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Re: Importance of clean fans

Post by IngoQ » Tue Aug 13, 2019 9:41 am

Know these problems only too well. There are magnetic dust filters, that you can attach to the cases air intake, to help with that. Provided, the case is made of metal of course ;)
Ingo :geek:

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