LisaList2
General Category => LisaList2 => Topic started by: bmwcyclist on February 26, 2025, 08:14:17 pm
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Anyone installing cooling fans or heat sinks? If so…
Fans:
Where?
Power?
Heat sync
On what?
What size?
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cooling fans...
If you have a 16 or 18 MHz XLerator, you will almost certainly need something like the card cage cooling fan it was sold with. The Sapient motherboards are designed with a mounting location for such a fan, but you probably don't have one of those.
Adding a fan to cool the PSU makes a big difference in longevity in my experience. You can add it inside the PSU, or eg. on a chimney above it at the back.
Back in the day that hard drives were installed above the floppy drive, a fan was sometimes required depending on the drive.
I'll look for pictures if someone else doesn't have them handy.
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Are there any plans or photos for the card cage with fan?
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Are there any plans or photos for the card cage with fan?
I'll find a photo or take one. The manual in the XLFan Manual topic (https://lisalist2.com/index.php/topic,271.0.html) has the connection info. I think the original XLerator manual (https://lisalist2.com/index.php/topic,268.0.html) has that info too.
There is a pic of the Sapient motherboard with fan installed in one of James Denton's blog posts: This Old Lisa: Hands-on With the Sapient Technologies Lisa 1 & 2/5 Motherboard (https://www.jimmdenton.com/sapient-motherboard/).
edit: pics have been added to the XLFan Manual topic.
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Power Supply fan examples... crude and not so.
Since the PSU was designed for convection cooling, it doesn't take much airflow to cool it well. A quiet low performance fan is usually sufficient.
If you open the PSU, beware of potentially dangerous voltages that remain for a while after it is unplugged (regardless of whether it has been on or off). Leaving it unplugged for a few hours before opening it is usually sufficient to dissipate the danger, but regardless: open it at your own risk!