Bun's Lab – Telegram
Bun's Lab
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Electronics projects, vintæg computing, programming and repairs. A minimalist blog of sorts.
@BunsGarden @BunsNook
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At least I got the board out.
This is actually an 8086 not an 8088. Huh. Kinda cool.
Bun's Lab
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Fuck whatever this thing is. All my homies use CR2032.
Despite the absolutely proprietary nature of the PS/2 line, internally the floppy drives look fairly ordinary. Aside from the connector and form factor. They even have a drive ID jumper. What use is that in a PC compatible?
And then I wonder why there is always so much dust in my apartment.
This was loose inside. Any idea where it goes?
Nvm
Drive is clean again and so is the board. I replaced what tantalums I had on hand. The last one on the board I can do with the board in the case.

Tomorrow I'll clean the case and then let's hope everything works.

Oh and the PSU wasn't riveted in after all, just stubborn.
I gave the power supply innards a visual inspection, adjusted the voltages, put it back together and I get ... Nothing. Black screen and two beeps.
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I created a reference diskette (the drive is 720k only btw), but it only briefly spins up. A friend with the same drive said the electrolytics on the spindle motor pcb were leaking on his. So I guess that's an issue on mine too.
Yeaaah... Already produced that typical fish smell when desoldering
Well, I have 10µF SMD caps in stock, but not 1µF 50V. Only these through hole caps, and checking them, the ESR seems to be a bit high at first glance. However, the expected ESR goes up with maximum voltage and lower capacitance. So it is fine
Of course the pads are coming off