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Re: [edlug] high pitched whistling noise - reply




Hi Magnus


The capacitors in a PSU are highly dangerous. If you were to short one with some charge in it, it could explode and blind you.

I've got a 145W ATX PSU you could borrow. It's enough to power the MB, PCI cards,two hard disks,CDROM and floppy. Thats why I had it lying on my desk.

--
Andrew
paul@xxx.xxx.xxx wrote:
Well it definetly sounds like the power supply.

However if you dont have any  waranty seals you may want to try checking
all electrical connections and reseating all components just to be sure
before you go through the hastles of a waranty claim.

If you are technicaly minded the most common cause of a power supply
failure is for the power supply to have badly soldered connections on the
circuit board either on the output wires or on any high heat components.



Quoting paul@xxx.xxx.xxx:


Can you tell me if you get a brief flash of the power led or the cpu fan
twiches slightly.

no, it's totally dead. the whistling actually occurs in standby modus (i've got the system usually totally switched off). when i switch it off again, the frequency of the whistle becomes lower, like something is being discharged. i do strongly suspect now (after some googling) that it could be the capacitors (hopefully in the psu) which would also explain the dischraging noise when switching off again. still i would like some confirmation. at the end of the day i still have warranty on it, it's just a faff having to send it back to the supplier especially when you don't quite know what the prob is. cheers magi


-- Magnus Hagdorn Department of Geology and Geophysics The University of Edinburgh Grant Institute West Mains Road Edinburgh EH9 3JW Scotland PHONE: (+44) 131 650 5917 FAX: (+44) 131 668 3184 email: Magnus.Hagdorn@xxx.xxx.xxx




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