Hello crews,
I got a faulty Delta DPS-150GB PSU from a Power Macintosh G3 Beige.
The computer has suddenly stopped working.
I checked the PSU and found out that there is no voltage on the trickle rail. That explains why the Mac doesn't power on.
An initial visual inspection has revealed neither blown components nor bulging/leaking caps. The main fuse is good, too.
Judging by the markings on the PCB, the PSU was built in April 1998.
I therefore assume that replacing all caps except the big ones won't do any harm.
Nevertheless, I would like to ask the experienced users here for what can cause the trickle power to suddenly disappear. Is there any component I can check for failure?
Thank you in advance!
P.S.: I had to desolder C901 in order to determine its capacity because the marking was hidden by a huge blob of glue...
I got a faulty Delta DPS-150GB PSU from a Power Macintosh G3 Beige.
The computer has suddenly stopped working.
I checked the PSU and found out that there is no voltage on the trickle rail. That explains why the Mac doesn't power on.
An initial visual inspection has revealed neither blown components nor bulging/leaking caps. The main fuse is good, too.
Judging by the markings on the PCB, the PSU was built in April 1998.
I therefore assume that replacing all caps except the big ones won't do any harm.
Nevertheless, I would like to ask the experienced users here for what can cause the trickle power to suddenly disappear. Is there any component I can check for failure?
Thank you in advance!
P.S.: I had to desolder C901 in order to determine its capacity because the marking was hidden by a huge blob of glue...
Comment