>Hello all. Last night I powered up my 2K (seperate power supply and
>desktop unit ser# 68). All was well for about 5 minutes when I heard 2
>loud bangs accompanied by 2 flashes from the power supply. I was not
>transmiting at the time. Now I get no HI voltage light or grid light.
>The tubes light up just as bright as ever but the Hi Voltage relays
>don't click in. I've checked all the fuses including the big Hi voltage
>fuse. I can see no evidence of arcing with the possible exception of one
>of the 3b28 tubes. It looks a little burned inside near the base. Do
>these tubes age or fail in this manner? Or is there another problem that
>is not visible? Any thoughts or suggestions? stan
>
Is the 7,5 ohm 25 watt adj. slider resistor in the neg. HV return
circuitry open at one end, Stan? {This is part of the circuit that
controls the overload relay.}
R. L. Measures, 805-386-3734, AG6K
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