Hello guys, Just thought I would again say thanks to those that helped with comments on replacing the driver transformer in my DX-100. Bob, W4WSZ sent me out the exact replacement and I now have it in the unit and playing.
A couple interesting things I found was the new 5V4 low voltage rectifier tube was bad, must of seen too much current. After replacing the 5V4 and testing the circuit I saw the 12BY7 was shorted and looked more like a light bulb than a tube. I went looking and found the 680 ohm cathod resistor was burned open. Now I wonder if the resistor failed first, taking the 12BY7 then smoking the driver xfmr causing the 5V4 to die. Or maybe it all happened when the xfmr went up in smoke. It is back on the air and Chuck, WA0ZHH and Lonnie W0GPZ said it sounded good. 73 Mike W0FD
