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Testing power supply of a Sparc Station 20

tonata

Experienced Member
Joined
Sep 11, 2019
Messages
227
Location
France
I would like ot test the power supply of a SS20 before it is pluged in the motherboard.
I am not sure which two cable I need to connect as I do with an ATX power supply (green + ground usually).

Manual: https://docs.oracle.com/cd/E19127-01/sparc20.ws/801-6189-12/801-6189-12.pdf

There is this pin description:
Code:
16 Green AC Outlet
9 Grey Power Off
18 Yellow Power On

Does anybody know which 2 pins to connect to switch on the power supply?
I know the voltages will not be perfect, but I still want to measure them before powering on the entire computer.
 
So, I think momentarily shorting pin 18 yellow PON to ground should power it on?
 
Actually just toggling the power supply button does the job. I will leave it on for 20 minutes just to be sure.
Capacitors are ok, but it seem there is some liquid that is leaking from the transformer TM842 cce9443. It is only a single drop or two. Is this a real problem. I am going to use it just from time to time.
 
Last edited:
Actually just toggling the power supply button does the job. I will leave it on for 20 minutes just to be sure.
Capacitors are ok, but it seem there is some liquid that is leaking from the transformer TM842 cce9443. It is only a single drop or two. Is this a real problem. I am going to use it just from time to time.
Excess varnish painted over the coils and forced out by (usually yellow) insulating tape?
 
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