Odds are the problem is either the LM723CN controller or 2N5886G pass transistors (or both). The controller is even socket mounted for easy replacement. When I had a failure in my RS-35M a few years ago I ordered spares for both. I often wonder how many things wind up in our landfills that need nothing more than a simple component!
73, Bill W4ZV You can rebuild Astron supplies and there's even an article and circuit boards available. The article: <http://www.bwcelectronics.com/articles/WP20A190.PDF>http://www.bwcelectronics.com/articles/WP20A190.PDF The circuit board: <http://www.farcircuits.net>http://www.farcircuits.net search for PS-15D-122 $5 and don't forget to add $5.50 for shipping. On Mon, 11 Jun 2012, Jack Berry wrote: > Bill, > > Just added an Astron VS-35M to the shack after nearly 20 years with a RS-35m > which is still working like new. I went with the variable supply so I could > dial > up the output voltage to meet charge requirements for a 12V gel cell. > I wouldn't go to any switchers for fixed service if I could avoid it. > The Astron linear is hard to beat - simple, quiet (in db's and rf) and heavy. > Good switchers are fine I'm sure but when I looked around online I saw a lot > more variability on opinions and experiences with switchers. Astron is highest > rated overall and reasonably priced for a 20+ year service life. > > 73, > > Jack - WE5ST > > > > > > ________________________________ > From: Bill <[email protected]> > To: [email protected] > Sent: Mon, June 11, 2012 6:38:34 PM > Subject: [Elecraft] OT: Popular power supply query > > Time has come to purchase a new power supply - the 33 year old Astron > has passed on. What are the popular and reliable supplies being used > these days? If there are some to seriously stay away from, please so state. > > Thanks, > > Bill W2BLC > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
