ATX strømforsyning, det grå ben

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Hej,
Jeg har et problem med et Acer Idea mediecenter. Det er helt dF8%dt, sE5%
jeg troede fF8%rst, at det var strF8%mforsyningen. Jeg har nu mE5%lt pE5%
strF8%mforsyningen, og det eneste der virker forkert er signalet pE5% det
grE5% ben - det gE5%r aldrig hF8%jt. SE5% vidt jeg kan forstE5%, er det et
statussignal, der viser, om strF8%mf. er ok.

ATX/ATX 12V Power Supply Design Guide ver 1.1 foreskriver:
"PWR_OK" is a "power good" signal. It should be asserted high by the
power supply to indicate that the +12 VDC, +5VDC, and +3.3VDC outputs
are above theundervoltage thresholds listed in Section 3.2.1 and that
sufficient mains energy is stored by the converter to guarantee
continuous power operation within specification for at least the
duration specified in Section 3.2.11, "Voltage Hold-up Time."
conversely, PWER_OK should be deasserted to a low state when any of
the +12 VDC, +5 VDC, or +3.3 VDC output voltages falls below its
undervoltage threshold, or when mains power has been removed for a
time sufficiently long such that power supply operation cannot be
guranteed beyond the power-down warning time. The electrical and
timing characteristics of the PWR_OK signal are given in Table 14 and
in Figure 2.

Kunne det tE6%nkes, at strF8%mforsyningen er ok, og at dette ben
simpelthen bare ikke benyttes i denne strF8%mforsyning?

http://pinouts.ru/Power/acer_idea_psu_pinout.shtml

Mvh.
Kim

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