Have a NFL Blitz that boots to blue screen. I checked the voltage and +12v was low @ 10v, which I assume the hard drive needs to spin the disks.
Anyway took the PS out to test bench. Adjusting the 5v adjustment pot caused power supply to shut down. Sprayed pot with some deoxit stuff and can adjust pot w/o shutting power supply down. Thanks Ken Layton...saw that in a post somewhere. So can can get +12 to @ 11.75 but the +5 is at > 5.5v which is too high.
Then removed the fan as suspected it was bad or at least needed to be degunked. With fan removed the PS is at 11.75 on +12 while 5.1 on +5.
I checked the caps with ESR in ckt and they appear to be fine.
Calling Ken Layton or other.
Any thoughts on why the 12v is so low?
Is there one cap specific to 12v I can try swapping out?
What voltage is supposed to be on blue wire? I am getting @ -8 to -9v dc.?
Anyway took the PS out to test bench. Adjusting the 5v adjustment pot caused power supply to shut down. Sprayed pot with some deoxit stuff and can adjust pot w/o shutting power supply down. Thanks Ken Layton...saw that in a post somewhere. So can can get +12 to @ 11.75 but the +5 is at > 5.5v which is too high.
Then removed the fan as suspected it was bad or at least needed to be degunked. With fan removed the PS is at 11.75 on +12 while 5.1 on +5.
I checked the caps with ESR in ckt and they appear to be fine.
Calling Ken Layton or other.
Any thoughts on why the 12v is so low?
Is there one cap specific to 12v I can try swapping out?
What voltage is supposed to be on blue wire? I am getting @ -8 to -9v dc.?
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