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My Sun Collection
I have a collection of Sun computers.
- SUN386i
- SPARCServer 470
- SPARCStation 1
- SPARCStation 1+
- SPARCStation 2
- SPARCStation SLC
- SPARCStation ELC
- SPARCStation IPC
- SPARCStation IPX
- SPARCStation 10 with 3 Processors
- SPARCStation 4
- SPARCStation 5
- SUN Ultra 1
- SUN Ultra Enterprise 1
- SunBlade 1000
If you have a SPARCStation IPC or IPX, you will probably need to replace the capacitors in the power supply. You can follow this guide. This should be done as soon as possible because the leaking electrolyte destroys the board and the components. For me, R203 and R217 were corroded so much that the pins broke off when I touched them. The power supply wouldn't start, because they are part of the overvoltage detection. They are 1k and 10k, so I could easily replace them. Also make sure not to leave any dirt under the transistor there, that can also trigger the overvoltage detection. I had to find out the hard way.
I have read here that someone found a broken 7812, but my regulators were all ok.
In the process of getting my IPC and IPX power supplies to work again, I have drawn a rough schematic for them. There is no warranty for anything in there, most parts are just generic symbols, but maybe it helps someone.
If you happen to be in Germany, this is the list of capasitors I used. When I started up the IPX for the first time after many years, the first sign of life was an exploding capacitor on the main board (C1105), so maybe you want to have a 33μF SMD capacitor at hand.
Make sure to disconnect the power before doing anything, there are dangerous voltages inside the power supply.