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IBM PS/2 Graphics Issues

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First post, by CRACKBONE

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Hello,

I have recently purchased an IBM PS/2 Model 30 286 off of Ebay and am experiencing a few issues. I'm new to retro computing, so please be patient with my inexperience.

When turned on:
- The PSU fan spins up
- The motherboard's chips heat up
- The floppy disk drive makes no sounds whatsoever
- The computer does not output a video signal via VGA, the monitor detects that there is a computer connected through the VGA cable, but gives a message saying that there is "[n]o VGA signal from your device."
- The keyboard's caps lock and num lock lights flash and then go out immediately

Could these issues be solved by ordering new hardware, like a GPU or something? Or is it possible that it's just something simple that I don't have the experience to recognize? I'm not really sure what other information is necessary to properly diagnose the issue, so please feel free to ask any question that may be of further assistance. Thank you!

Best,
T.W.

"A Godly mind prizes honour above worldly good."
- Rembrandt van Rijn

Reply 1 of 6, by waterbeesje

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No beep, no fdd sound... No image... To me this sounds like it could be the post test does not complete.
Does the hard drive spin up or does the speaker beep?

These symptoms could be all standalone but can also be connected to eachother.

No image on VGA: try another screen (or five, preferably older ones). I've had the same experience, on one screen there was no image (from all 6 model 30's) but with the original screen the image was just as expected.

Floppy disk. With a few bad caps the stepper motor may refuse or the main motor may fail. Does the led light up? Recap is the answer.

Keyboard flash is as expected, it's part of the self test to recognize a keyboard.

Worst case your bios may be corrupted, some random critical component may fail or some motherboard traces are broken. But I wouldn't expect these.

If you have any soon ISA cards installed, you may remove them to make sure they don't cause the issue.

Stuck at 10MHz...

Reply 2 of 6, by CRACKBONE

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waterbeesje wrote on 2023-10-14, 21:52:
No beep, no fdd sound... No image... To me this sounds like it could be the post test does not complete. Does the hard drive sp […]
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No beep, no fdd sound... No image... To me this sounds like it could be the post test does not complete.
Does the hard drive spin up or does the speaker beep?

These symptoms could be all standalone but can also be connected to eachother.

No image on VGA: try another screen (or five, preferably older ones). I've had the same experience, on one screen there was no image (from all 6 model 30's) but with the original screen the image was just as expected.

Floppy disk. With a few bad caps the stepper motor may refuse or the main motor may fail. Does the led light up? Recap is the answer.

Keyboard flash is as expected, it's part of the self test to recognize a keyboard.

Worst case your bios may be corrupted, some random critical component may fail or some motherboard traces are broken. But I wouldn't expect these.

If you have any soon ISA cards installed, you may remove them to make sure they don't cause the issue.

Waterbeesje,

Thank you for the reply. The system lacks a hard disk, and there is no beep that I can hear. There also is no light on the floppy disk drive. How would one go about recapping the floppy disk drive? Thank you, once again.

Best
T.W.

"A Godly mind prizes honour above worldly good."
- Rembrandt van Rijn

Reply 3 of 6, by Horun

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Yeah the PS/2 Model 30 should have Dual floppy drives if no hard drive. Sorry to say but it is one of the worst 286 computers ever built IMHO, hope you got it dirt cheap....edit fixed boo-boo

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 4 of 6, by CRACKBONE

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Horun wrote on 2023-10-15, 02:02:

Yeah the PS/2 Model 30 should have Dual floppy drives if no hard drive. Sorry to say but it is one of the worst 286 computers ever built IMHO, hope you got it dirt cheap....edit fixed boo-boo

I wouldn't call it dirt cheap by any means, but it was a hell of a lot cheaper than some of the other prices I was seeing. Just a little intimidated by the recapping of the floppy drive, but I will persevere. Wish me good Providence.

Best,
T.W.

"A Godly mind prizes honour above worldly good."
- Rembrandt van Rijn

Reply 5 of 6, by waterbeesje

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Horun wrote on 2023-10-15, 02:02:

Yeah the PS/2 Model 30 should have Dual floppy drives if no hard drive. Sorry to say but it is one of the worst 286 computers ever built IMHO, hope you got it dirt cheap....edit fixed boo-boo

Nah, it requires just one fdd to boot, hdd is optional. I did some experimenting with mine and to save the harddisk from countless spinups I disconnected it. The thing gave me an error on HDD but happily booted from floppy disk after [F1].

Yes, it's one of the slowest 286 computers out there, I consider it as an XT on steroids. My other 286 (16MHz, 0ws) is over twice as fast. Even so, this ps/2 is still fun to play with. It is highly compatible with more modern hardware (VGA, ps/2 keyboard and mouse, ISA). If you want speed for dos I'd recommend any mmx or k6 anyway 😀

Stuck at 10MHz...

Reply 6 of 6, by CharlieFoxtrot

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waterbeesje wrote on 2023-10-16, 07:29:

Yes, it's one of the slowest 286 computers out there, I consider it as an XT on steroids. My other 286 (16MHz, 0ws) is over twice as fast. Even so, this ps/2 is still fun to play with. It is highly compatible with more modern hardware (VGA, ps/2 keyboard and mouse, ISA). If you want speed for dos I'd recommend any mmx or k6 anyway 😀

I agree, not every system needs to be the fastest rocket ship to have fun with them, especially if you have multiple systems to fill the gaps. You just need to take for what they are capable of and use correct software with them. Indeed, generally PS/2s never were the fastest options, especially compared to similar priced clone offerings. I remember reviews back in the day where even many of the top end PS/2s were criticized of providing poor bang for buck in terms of performance starting from slow CPUs and slow HDDs compared to competition.