Image Map Image Map

Search:

Type: Posts; User: willmurray461

Page 1 of 9 1 2 3 4

Search: Search took 0.02 seconds.

  1. Replies
    6
    Views
    120

    I assumed you had an eduquest Model 55, which...

    I assumed you had an eduquest Model 55, which uses 72 pin SIMMs. If you have a 30 or 40, then you’ll need 30 pin SIMMs. I’m pretty sure the guide for modifying 30 pin SIMMs only works with 1MB...
  2. Replies
    6
    Views
    120

    Probably uses the IBM proprietary 72 Pin SIMMs...

    Probably uses the IBM proprietary 72 Pin SIMMs used for the PS/2's. Make sure your memory sticks are IBM branded (I think some from Kingston may be compatible if you can't find IBM ones on eBay). The...
  3. I have an Inboard 386/PC too, as well as a Cyrix...

    I have an Inboard 386/PC too, as well as a Cyrix 486DRx2 16/32 to go with it. I recently bought a 5150 to put it in. Can't wait to pick it up! I just wish I could get one of those 1/2/4MB piggyback...
  4. I was thinking more along the lines of the Intel...

    I was thinking more along the lines of the Intel Inboard 386/PC, or the 486SLC2 upgrades for 286's, things with greater performance boosts.

    I guess for now. But I heard they're accepting...
  5. Why do no modern-day accelerators exist for the PC?

    I was just thinking about buying a 386 to 486 upgrade for one of my machines, and realized that it would be really nice if there were modern-day accelerator boards for the PC (8088, 286, 386, etc.)....
  6. Could you give me the names of the parts which I...

    Could you give me the names of the parts which I would need to check, or perhaps where they are on the board?
  7. I finally worked up the courage to check the...

    I finally worked up the courage to check the voltages on the PSU. It looks like all of the lines work (-6.1V for -6.3V, 11.9V for 12V, 20.16V for 21.2V, 55.59 for 56.7V, and 150.3V for 154V). They...
  8. I'm noticing more weird things. First, the text...

    I'm noticing more weird things. First, the text sometimes starts moving in a wavy motion as shown here. I also looked up the part number on the green "25000V" part of the flyback transformer and...
  9. If I make no progress tomorrow looking for...

    If I make no progress tomorrow looking for arcing, is it possible that I could order a replacement transformer, or are equivalent parts no longer manufactured?
  10. Would electrical arcing be possibly visible,...

    Would electrical arcing be possibly visible, perhaps in a dark room?
  11. It seems that you might be onto something,...

    It seems that you might be onto something, because I was able to hear a noise which was synchronized with the pulsing motion with my AM radio. It sounded just like the noise wind makes on a...
  12. Unfortunately, I don't own an oscilloscope, so I...

    Unfortunately, I don't own an oscilloscope, so I won't be able to do the related tests. However, I do own a multimeter and could probably check that all the voltages are correct. I'll just need to...
  13. Here's a video to show what's going on when I say...

    Here's a video to show what's going on when I say "pulsing": https://youtu.be/VjKLnGh533s
  14. I just opened it up again, unplugged the video...

    I just opened it up again, unplugged the video input board and plugged it back in and now the sets back to working (sort of)! The weird pulsing/vibrating issue is still there. How would I check the...
  15. I just looked at the old caps I took out and...

    I just looked at the old caps I took out and remembered that some of the 4.7uf 50v caps have a black casing, whereas others have a blue casing. Is it possible that these black ones are the low ESR...
  16. Replies
    7
    Views
    356

    Just thought I would do a follow up. Fixed two...

    Just thought I would do a follow up. Fixed two connections on the cable and now the monitor works fine.
  17. Replies
    10
    Views
    614

    Just thought I would follow up. I did a low level...

    Just thought I would follow up. I did a low level format with the diagnostics with the SCSI/A w/ Cache installed. The format would get to 97% and then fail every time with "Invalid Sense Data was...
  18. I still have the original caps, so I might put...

    I still have the original caps, so I might put back the neck board one as well as the other low esr ones, if you can remember which ones they are.
  19. Replies
    7
    Views
    356

    My monitor has a much brighter raster when I turn...

    My monitor has a much brighter raster when I turn it on indoors at full brightness, so I don’t think I have the same problem. My picture looks dim justbecause it’s outside and probably not at full...
  20. Replies
    10
    Views
    614

    I don't remember. The drive was originally used...

    I don't remember. The drive was originally used the SCSI/A to format the drive and install DOS, however I also tried doing the same with the Spock afterwards. Would a low level format help? I thought...
  21. Replies
    7
    Views
    356

    I don't get a brighter raster by messing with the...

    I don't get a brighter raster by messing with the contrast. However, I just took out the multimeter and found that the cable is most likely the problem. I removed the cable completely from the...
  22. Just curious, which capacitors need to be low...

    Just curious, which capacitors need to be low ESR? I didn't make sure to replace any of the caps with low ESR ones, which could explain failures.
  23. Replies
    10
    Views
    614

    My SCSI w/ Cache adapter has the 92F2244/92F2245...

    My SCSI w/ Cache adapter has the 92F2244/92F2245 BIOS, so I don't think it should be having a problem either. How would I increase the delay that the controller waits for the SCSI drive to be ready?
  24. Replies
    10
    Views
    614

    Booting 1GB SCSI HDD on PS/2

    I've been having some problems trying to boot off of one of my SCSI hard drives on my PS/2 Model 80 and 90. It's a 1GB IBM OEM Apple branded DPES - 31080, SCSI ID 6, no other options enabled with...
  25. I did replace the x2 caps, so that shouldn't be...

    I did replace the x2 caps, so that shouldn't be the problem. I kept all of the original caps, and none of them seem to be non polar. I'll go check to see if any of them were installed backwards...
Results 1 to 25 of 221
Page 1 of 9 1 2 3 4