voidstar78
Veteran Member
I'm looking for some help to repair/replace an IBM 5110 power supply.
I have a 3rd fully working 5110 intact and with working power supply, so I have a functioning reference on how they are supposed to be wired.
But I also have two 5110's that I think are having power supply issues. I see where the main power lines comes in, via 120Vac wall adapter, and confirmed that power is reaching the board. From there, the job of this PSU is to provide an assortment of voltages: -12V, -5V, 5V, 8.5V, 12V, on some output headers on the far right side edge of the board.
At some point I was getting these voltages in the A1/Y1 PSU adapter. But long story short, now I am not.
If anyone has an otherwise for-parts, trashed, or non-functional 5110, or perhaps a power supply pulled from such a system - let me know.
Or if anyone has expertise in identifying replacement comments to repair these PSUs, or knows a trusted contact that may - please let me know.
I think basically I need to fix this:
To look like this: (the yellow wires on the right are output connections that go to the external ports and also straight to the IBM PC 5110 A1 mainboard in a 24-pin header called Y1, of which only 23-pins are used).
Below is a highlight (red rectangle) of the missing components that need to be replaced. I actually do have these components (non-working, they were damaged when cut out), but getting part numbers to determine suitable replacement will still be difficult. The red arrow below is where the 120V input goes into. If anyone knows what the "brown" components on the left side (see above, they are missing in the "other" PSU pictured below) - they are not capacitors, they actually feel like possibly ceramic and are hollow in the center (like a thick straw). Then there are some resistors and "black components" missing near the center.
I'm not able to do this kind of soldering myself. I can ship just the PSU boards, which should be straightforward to bench test (apply 120V on the left, get DC voltages out on the right).
Thank You!
I have a 3rd fully working 5110 intact and with working power supply, so I have a functioning reference on how they are supposed to be wired.
But I also have two 5110's that I think are having power supply issues. I see where the main power lines comes in, via 120Vac wall adapter, and confirmed that power is reaching the board. From there, the job of this PSU is to provide an assortment of voltages: -12V, -5V, 5V, 8.5V, 12V, on some output headers on the far right side edge of the board.
At some point I was getting these voltages in the A1/Y1 PSU adapter. But long story short, now I am not.
If anyone has an otherwise for-parts, trashed, or non-functional 5110, or perhaps a power supply pulled from such a system - let me know.
Or if anyone has expertise in identifying replacement comments to repair these PSUs, or knows a trusted contact that may - please let me know.
I think basically I need to fix this:
To look like this: (the yellow wires on the right are output connections that go to the external ports and also straight to the IBM PC 5110 A1 mainboard in a 24-pin header called Y1, of which only 23-pins are used).
Below is a highlight (red rectangle) of the missing components that need to be replaced. I actually do have these components (non-working, they were damaged when cut out), but getting part numbers to determine suitable replacement will still be difficult. The red arrow below is where the 120V input goes into. If anyone knows what the "brown" components on the left side (see above, they are missing in the "other" PSU pictured below) - they are not capacitors, they actually feel like possibly ceramic and are hollow in the center (like a thick straw). Then there are some resistors and "black components" missing near the center.
I'm not able to do this kind of soldering myself. I can ship just the PSU boards, which should be straightforward to bench test (apply 120V on the left, get DC voltages out on the right).
Thank You!