If you do not have the negative output post grounded directly to the cabinet
of the Astron, then all sorts of spikes can hit the regulator and damage it.
Mike N4NT
----- Original Message -----
From: "Clark Savage Turner" <csturner@slonet.org>
To: <tentec@contesting.com>
Sent: Wednesday, July 17, 2002 10:54 PM
Subject: [TenTec] astron blows regulators
> Curious, I have an RS-35M that keeps blowing the regulator, but it does
> it after some time of operation....like a day, sometimes a few weeks,
> then it goes out, supply shuts down. At first I suspected the little
> regulator voltage pot, it is cheap, so I shot it with DeOxit and wiggled
> it, put a new regulator in (the thing is socketed from the last owner, I
> suppose this has been happening for some time!) - it worked for a couple
> of weeks, powering transmit / receive cycles just fine.
>
> There isn't much on the board, I can't see what could be killing the
> regulator in there. I will replace the pot just for good measure (it
> acted dirty when I set the voltage), but does anyone have any other
> suggestions? Ever see this problem?
>
> Clark
> WA3JPG
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