[sdiy] OT: Whining Transformer

[Steve Begin]

Allright, since everybody is telling me to look towards a new psu, I guess 
I'll do just that.
I appreciate all the advice.

thanks guys,
Steve

----- Original Message ----- 
From: "Steve Ridley" <spr at spridley.freeserve.co.uk>
To: "Steve Begin" <trypannon at hotmail.com>
Sent: Thursday, October 21, 2004 8:59 AM
Subject: Re: [sdiy] OT: Whining Transformer


>
> Steve
>
>> Is it most likely coming from the transformer?  If so, will replacing
>> the transformer help?  If so, do these numbers mean anything to
>> anyone? (they were on the transformer but if it's a part number I
>> can't seem to find the part anywhere).
>
> Loose windings in transformers have been known
> to vibrate.  Long term, this is a bad thing as it can
> lead to shorted turns, inefficiency, heat, smoke etc.
>
> Your chances of locating a suitable transformer are
> slim - they are usually custom designed for the job.
> By the time you've found one, bought it and paid
> postage, fitted it etc, a replacement PSU would
> be as cheap - and probably more reliable.  I assume
> it's a fairly standard PC PSU?
>
> I have managed to damp the vibrations in loose
> windings with some sort of liquid rubber solution
> on occasions.  I only applied a thin line of the
> solution - large amounts could make the transformer
> overheat.
>
> If you do any work on your supply, beware that they
> can store high voltages in the main reservoir caps
> for a considerable time.  I've had a nasty surprise
> from a PSU which I'd switched off the night before!
>
>
> another Steve
>
> -- 
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