Correct voltage PSU TK-4230DC \ VOGONS

Correct voltage PSU TK-4230DC

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First post, by brunofbrsilva

Posted on 2023-07-18, 22:45

brunofbrsilva Offline

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Posts: 54
Joined: 2023-07-06, 13:58

Good evening everyone, I recently acquired a Gateway 2000 4dx2-50v cabinet and it came with the TK-4230DC power supply, but when measuring its voltages I found something strange, testing the power supply without load the Power good signal is giving 0.19v (the correct one is not would it be 5v?) the yellow wire is giving 10.94v and the red one 5.21v. Observing the power supply board, there is no sign of a swollen capacitor or any apparent problem. Can anyone tell me if these voltages are correct? thanks.

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Reply 1 of 2, by Horun

Posted on 2023-07-19, 03:22

Horun Offline

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Never test a PSU without a load. You actually could ruin the PSU that way if it does not have full protections built in. At the least hook up a few HD's that you do not care about...
added: also the Power Good is feedback from the motherboard, so with nothing connected will give odd results

Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun

Reply 2 of 2, by brunofbrsilva

Posted on 2023-07-19, 11:28

brunofbrsilva Offline

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Rank: Newbie
Posts: 54
Joined: 2023-07-06, 13:58

Good morning, thank you very much for your observation, I did some tests counting a cd reader and a floppy disk reader 5 1/4:

(Cd reader)
Power good: 0,19v- red: 5,00v- yellow: 11,43v

(Cd reader + floppy disk 5 1/4)
Power good: 0,19v,-red: 4,96v-yellow: 11,50v

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