The condition you describe could be caused by an open diode rectifier. If only one diode is working the regulation would be very poor but the no-load voltage output could look normal.
Take a close look at the two diodes and make sure both are operational. 73 - Jim W5ZIT --- On Mon, 8/18/08, enjoyacold807 <[EMAIL PROTECTED]> wrote: From: enjoyacold807 <[EMAIL PROTECTED]> Subject: [Repeater-Builder] GE MASTR II PWR SUPPLY - What dies first? To: [email protected] Date: Monday, August 18, 2008, 8:57 PM Your basic GE Mastr II rack mount pwr supply (ref PL19D436272G1 Rev A) was part of club WA8UXP's 2m GE MastrII (base) repeater (146.985 Mhz) until it started acting up (a few years ago). Basically, the no load voltage looked ok. But, once the 100w PA kicked in the voltage swings made a sunami look like a placid lake. Ouch!! It was then replaced by Astron RS-35A. Now, the club has three (3) choices for the old fella being: boat anchor/scrap, try to fix, or hamfest sale as is. But option 2, hmmm, if economically repairable, maybe we could put it back where it belongs (w/ the repeater) and re-deploy the Astron. Ah, life, so many choices, so little time. BTW - Thanks for reading this far.... So, rather than spend countless hours finding & then pouring over service manuals for this (potenital) boat anchor we wanted to skip to the chase and leverge off the experience of others. If you've "been there, done that, and are willing to pass along words of wisdom" on this bear then we'd love to hear from you. What two or three things would you look for to fix in one of these power supplies? We promise, no response will go unread (honestly).. .! OK to reply to this Yahoo group, or, if you want to take off line then also OK to respond to Yahoo Group Goodyear_Amateur_ Radio_Club@ yahoogroups. com or look up my email on qrz and respond directly.. 73's de Rich AF1K... __,___
