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About schenkzoola

Basic Information

About schenkzoola
Location:
Portland
Interests:
Electronics, EV's
Occupation:
Engineer

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Total Posts
Total Posts
29
Posts Per Day
0.37
General Information
Last Activity
February 22nd, 2021 10:20 PM
Join Date
December 10th, 2020
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View schenkzoola's Blog

Recent Entries

Import 40Pin IDE to CF adapter prevents computer from booting - FIX

by schenkzoola on January 8th, 2021 at 10:39 PM
When working on an SLT/286, I found that an import CF adapter would prevent it from booting, to the point it wouldn't even start the memory test.

Troubleshooting steps included removing the CF card, unplugging power from the adapter, and finally unplugging the adapter from the ribbon cable.

I took the adapter to the bench and started probing it and comparing against the IDE pinout. I found that pin 28, SPSYNC:CSEL was permanently connected to ground in the adapter.

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Compaq SLT/386 or SLT/286 Power Supply Pinout

by schenkzoola on December 30th, 2020 at 06:40 PM
I've worked out enough of the pinout to get the laptop running with a third party power supply. I don't have a good battery, so I wasn't able to really determine what the battery sense terminals do, or see what things look like when charging. I can dig in a little later after I build a replacement battery; a project for another day.



In the image you can see the pinout looking into the computer. These are the male pins.

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