This is why I bought that 0-15 kvdc? hi-pot tester from W8JI.? Ur dead in the water without it.?
Hi-pot from anode to grid ( with grid temp bonded to cathode)
Then hi-pot from grid to cathode ( with anode temp bonded to grid).?
If the grid is shorted to the cathode? ( tube on bench, with a dvm between grid and cathode)? you have a 50% chance of clearing it.? Temp apply ( quick blip) 12 vdc from a car battery between grid and cathode.?
It will either:
(A)? blow it open
(B)? weld it permanently closed.?
?
Lou, what is typ hi-pot test results on a GOOD? 572B? ( anode to grid...... and grid to cathode)? ???
Jim? ?VE7RF
