[tech] Morwong's power supply went BANG! (bang! bang!)
Simon Fryer
fryers at rcpt.to
Sun Oct 17 02:12:31 WST 2004
> A while ago Matt Johnston tapped:
> As the subject says, at around 8:15 this evening, morwong's
> power supply went bang. This tripped the circuit breaker for
> the machineroom circuit, so everything lost power.
This is bad.
> Having eventually traced the source of the magic smoke to
> Morwong (it went bang a few more times when re-powered), we
> replaced the power supply with one of the two lying about
> from the Prioris. (The prioris is now acting as a
> semi-external scsi enclosure for morwong, but that's a
> different story).
Are we going to make an effort to repair/fix the PSU?
[no great losses]
> The cause could possibly be overheating, as someone said the
> machineroom was fairly hot yesterday. The aircon didn't seem
> particularly cold, so I bumped it up a bit for summer.
Not necessarily but it could be a factor. From what you said, my guess is
the bridge rectifier or chopper transistor have shorted. Should not be that
difficult to fix/diagnose.
Simon
--
------------------------------------------------------------------------
"Well, an engineer is not concerned with the truth; that is left to
philosophers and theologians: the prime concern of an engineer is
the utility of the final product."
Lectures on the Electrical Properties of Materials, L.Solymar, D.Walsh
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