>  I 'm trying to repair myself a switching Power Supply made by ZyXEL. The
> PS
> suffers from 5V line oscillating (actually the PS starts, shuts down,
> starts...). I checked against the output filters and CAPS and they seem
> ok,

It still sounds like a bad cap to me. Or the resistor that supplies the
startup current has drifted way up.

Cheerful regards,

Bob


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