From Newsgroup: comp.sys.ibm.ps2.hardware

It seems the power supply in my 520 server is dead. I've removed all
expansion cards and disconnected the RAID board and drives from the
power supply. Still no sign of life.

I suppose after 30 years, the manufacturer can't be blamed. Professional repair or replacement through a retailer is out of the question due to
cost and/or availability.

I can think of three possible solutions.

A. Theoretically, I could use a 9595 power supply, which offers
compatible connectors and comparable power. Unfortunately, it would blow
hot air into the case. Not ideal.

B. The power supply for the PC Server 5x0 series has a connector for Microchannel motherboards. IBM included an adapter board in the 520 case
that can power an AT motherboard (not ATX!). So, theoretically, an AT
power supply should also work, provided I had a reliable one.

C. Then there are ATX2AT adapter cables, which allow you to connect an
ATX power supply to the motherboard. Powerful, energy-efficient, and
quiet ATX power supplies are relatively inexpensive.

Of course, the adapter cable also has a drawback. Modern ATX power
supplies don't provide a 5-volt connection for the motherboard. I came
across this information in the adapter cable description. Apparently,
this can cause malfunctions with older sound cards in the ISA slot.

What do you think?
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