Ok Jim, The reply from WB5ITT is exactly how I would start. If you would like me to look at it, I could do that too. No charge - finding the problem and getting you back on the air is my enjoyment. A bad transformer is virtually the only expensive part and I have never heard of one failing.
73, N5EN Get Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ From: BVARC <[email protected]> on behalf of Jimmy Vance via BVARC <[email protected]> Sent: Saturday, January 8, 2022 10:36:50 PM To: [email protected] <[email protected]> Cc: Jimmy Vance <[email protected]> Subject: Re: [BVARC] Astron RS-35A FREE (but DOA) I'll report back once I figure out what's wrong with it On 1/8/2022 7:11 PM, Christopher Boone via BVARC wrote: Typically, the linear style supply loses its pass xstrs or 723 regulator. It also has a SCR over voltage protection on the output. Clamps the + to ground...the fold back circuit in the 723 prevents burn up. If it hums when turned in, I'd check that first. Remove the OVP and check voltage unloaded. It may be that easy of a fix. The linear series are easier to repair IMHO vs the switchers Chris WB5ITT On Sat, Jan 8, 2022, 7:06 PM Westley Clavey via BVARC <[email protected]<mailto:[email protected]>> wrote: The RS-35A is not a switching supply - - in case that influences anyone's thinking... I've got 2 of them here... On 1/8/22 4:40 PM, Gary Sitton via BVARC wrote: Allen: Most of those switchers have an MOV and a low-pass filter on the 120 AC input. This would be an easy fix if that's all it is. I would come and get it except that Richmond is a bit of a trip. I would like to visit your site anyway sometime though. Don't throw it out just yet... 73, Gary K5AMH On 1/8/2022 3:12 PM, Allen Brier via BVARC wrote: I have an Astron RS-35A here that is DOA from the lightning strike. There might be some good spare parts in it, or you can try to fix it. Free for pickup. I also have a couple of computer cases and other junque available. Call or email… Allen R. Brier N5XZ 1515 Windloch Lane Richmond, TX 77406 713-705-4801 ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected]<mailto:[email protected]> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected]<mailto:[email protected]> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/ -- Wes Clavey ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected]<mailto:[email protected]> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected]<mailto:[email protected]> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/
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