Good morning all, I need some advice.
Earlier today my Viking 500 tripped off with the familiar odor that we have all come to dread. I only lost HV. After I got the cover off the PS-Mod unit, I was surprised to see nothing unusual. Then I started sniffing, and that led me to the HV end of the plate transformer. I removed the end cover and again saw nothing unusual....only the odor, which by then was beginning to dissipate. Resistance measurements lead me to think that some windings may be shorted. One side to center tap reads 110 ohms. The other reads 95. The manual says 100 on either side. The HV secondary shows infinite resistance to ground, but that is with no juice applied. What I'm wondering is whether the 15 ohm difference is conclusive. If not, what other tests might I make without risking further damage? Thanks in advance for any advice, Dave, W4QCU Oak Ridge, TN
