[ICOM] IC-761 p/s

[Lee Wical]

FOR ME I TRIED THE ASTRON SS-30M, 30 AMP SWITCHING POWER SUPPLY AND 
HAVE HAD NO TROUBLE, NO NOISE.
LEE

At 04:31 PM 5/19/2007, you wrote:
>Interestingly, there seems to be no other problem.  Switching supplies are
>notoriously noisy and you're probable right that ventilation would make
>things worse.  At best, it is a poor design, but it is what it is.
>
>73
>
>Al, VE1AL
>_______________
>
>-----Original Message-----
>From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
>Behalf Of mel martin
>Sent: Saturday, May 19, 2007 11:17 PM
>To: icom at mailman.qth.net
>Subject: RE: [ICOM] IC-761 p/s
>
>I noticed the same thing when I opened a failed PS35 on my 751A. I think
>it's because the supply is imperfectly sealed and traps moisture. It would
>probably be better if these supplies were vented... But then RF hash might
>be an issue.
>
> >Working on the p/s of my IC-761 this weekend, I was dismayed to
> >discover a
>fair bit of corrosion inside.  All of the screws that hold the circuit
>boards are corroded on the tops.   They worked OK, in that there was no
>difficulty in removing them, but I was surprised.  Is this common?
>
>Mel...
>VE2DC
>
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