good day,
well i have here atx compaq psu that only spins its fan a second then stops.its first symptoms was low voltage. I measure the voltage on red
- +4 , yellow - +9 should be +12. Now when i try to turn it on again, it only produces a jolt of energy then fan stops. is it a shorted component on the secondary side? other possibilities.
regards,
ian
Could be capacitors. The smoothing caps and/or the small value electrolytics in the regulator circuit.
Dave
In message , yhan writes
What part number?
What part number?
hi! its model is HP 212 PART NO. 278740-001
"yhan" wrote in news:1126688436.704976.312430 @g49g2000cwa.googlegroups.com:
Do you have a proper load on the supply?
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hi, i connected two hard disks in the supply.
hi tom,
not yet. i'll try sooner. i also tried turning it on while no load but w/ same effect.
ian
Dave D ha scritto:
electrolytics
More probably the first : smoothing caps on the secondary sides, make sure you mount low-ESR caps, you can gett them from another power supply with another fault, (i.e. : an irreparable esemplar)
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