Hi,

My tip for localizing the clicking: Use half a meter of PVC hose, outer
diameter 6mm or so, stick one end into your ear and you can touch the most
dangerous (hot, high voltage) spots with the other end. Works like a doctors
stethoscope...

Peter



-----Urspr=FCngliche Nachricht-----
Von: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] Im Auftrag von
Matt Callow
Gesendet: Freitag, 16. April 2010 15:16
An: Microcontroller discussion list - Public.
Betreff: [EE] Ticking power supply

Hi, I have a fanless power supply for my mediacentre PC which has started to
make a ticking noise (5~10Hz i would guess).
It seems to get worse as the PSU heats up. I took the PSU apart and noticed
that one of the inductors was no longer cemented to the circuit board, so I
re-glued it. When I plugged it back in, all seemed good  - until is warmed
up. Then the ticking started again!
Does anyone have any suggestions as to what else I could check to see what's
making the noise within the PSU?

Matt
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