On Thursday, April 25, 2002, at 02:59 PM, Ben Smith ((QM Systems)) wrote:
> Could be one or more of the capacitors in the PSU drying out, if you
> can it may be worthwhile replacing them before the PSU fails as they
> can kill other components in the PSU when they fail.
> Start with the big one in the primary circuit (near the mains
> connector) it will probably be about 200uf @ 300-400V or possibly 2
> rated at 200v each.
> the others that go are the DC smoothing caps at the other end of the
> board, they will be 400-2000uf at 6-25V, when these fail the symptom
> is a high pitch squeal at switch-on for a second or so before the PSU
> shuts down.
> This basic guide is for any switchmode PSU, not specifically the 7300.
> Ben.
Aww crap. Would it be worth me coaxing the seller into sending me a new
PSU? He has a few after all!
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