Help with fixing a Compaq SLT/286 \ VOGONS

Help with fixing a Compaq SLT/286

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First post, by Anonymoose

Posted on 2025-01-27, 17:04

Anonymoose Offline

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Per the subject, I’m diagnosing some issues with said laptop that doesn’t seem to turn on. I received it without a hard drive and a replaced Dallas chip, so I assumed it had been worked on previously. The power brick seems to work, but the floppy drive doesnt spin up upon being turned on. I opened the internet power supply and nothing looked bad except this. Any thoughts? Anything else I should check? Thanks!

Reply 1 of 4, by pentiumspeed

Posted on 2025-01-28, 18:37

pentiumspeed Offline

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Location: Great Northern: Canada.

One of the long tube of capacitor is bad. I had this happen long ago.

Cheers,

Great Northern aka Canada.

Reply 2 of 4, by Anonymoose

Posted on 2025-02-27, 18:50

Anonymoose Offline

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Welp, I’m back, this time with what I think could be the problem? I’ve replaced the five capacitors in the PSU, it still doesn’t work. I’ve noticed though that the previous owner replaced the Dallas chip with a modern equivalent and apparently scratched up the surrounding area. Could this be the issue?

Reply 3 of 4, by Paar

Posted on 2025-02-28, 08:07

Paar Offline

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It definitely looks like bad desoldering job. Double check the continuity on the Dallas chip pins.

Does the PSU generate proper voltages?

Reply 4 of 4, by Anonymoose

Posted on 2025-03-01, 00:26

Anonymoose Offline

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Joined: 2024-04-14, 00:51

The PSU generates proper voltages, and I don’t have the original Dallas RTC as it’s been replaced with a Necroware NW12887. I could still check that though.

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