hillbilly3302 wrote:
I get NO reading of anykind between the top cap and pins 1 & 4......
according to the diagram pins 1 & 4 are the cathode/ filament and the cap is
the plate.... it should read like a dioad shouldn't it?

Remember it's got a whole stack of diodes in there, each with .6V drop. So
you need to put five or ten volts across it. A lot of modern DVMs won't do
this except on the diode test function.

It's easier to put 120V through it with a 60W light bulb in series, then
measure the drop across it if you don't have the right meter.
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."