Start by lifting the rectifiers off of the xfmr, plug in a new fuse and see
If the fuse holds, then do a f/b check on the diodes. That is the
most likely failure item. If it still blows, you have lost the xfmr.
If no diodes show bad, then the filter caps are next, after that you get
into the regulators, which will require some troubleshooting techniques.
Good luck, de KL7HF
From: MALEXANDER@HEALTHDYNE.com <MALEXANDER@HEALTHDYNE.com>
To: email@example.com <firstname.lastname@example.org>
Date: Tuesday, April 07, 1998 7:01 AM
Subject: [TowerTalk] Astron 35M Power Supply
>I wonder if any of you have experience with Astron power supplies....I
>was tuning up my amp with 100 watts -- drawing about 18 amps DC from an
>Astron 35M. Suddenly the station shut down. Checked the 8A fuse --
>blown. No problem; popped in another 8A slow-blow and flipped the
>switch. No popping, no nothin' -- supply didn't turn on, but the fuse
>was vaporized. So I took the cover off. No smoke, no charcoal.
>Started to ring it out on the high side -- continuity fine and the
>switch is OK. That's where I left off. Anybody have any ideas on where
>I should look tonight ?
>Thanks, guys ---------
>73 de KG9DB
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