Mine actually had a case rattle to it which made the hum louder after the 
move, I just pulled up a little on the top cover, pushed on the front panel 
a tiny bit and it went away. Probably all it is unless the transformer 
itself loosened up but that's not likely the way that's bolted in.
----- Original Message ----- 
From: "tom behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, August 24, 2010 9:42 PM
Subject: Noisy Astron RS35 power supply


> Hi, all.
>
> I don't know whether it's because of being jolted around in the move or
> what, but my trusty metered Astron RS35 power supply seems noisier than it
> used to be.
>
> It still works fine, but seems to have a louder hum than it used to have.
>
> I have it set up in exactly the same way I did out in Colorado, on the top
> shelf of a sturdy ham operating desk.  I even put some padding underneath
> the supply, but it really didn't seem to do much.
>
> I suppose I could take the cover off, and try to feel around to see what
> might have happened, but I know there are some electrolytic capacitors in
> there that would not make for a pleasant experience if they were
> accidentally discharged.
>
> If anyone has had this experience, and has any suggestions, please let me
> know.
>
> Again, the supply still works fine;  it just lets me know it's around more
> than it used to.  (smile)
>
> 73 from Tom Behler:  KB8TYJ