"Danny D." wrote in message
...
On Mon, 17 Dec 2012 19:45:33 -0800, hr(bob) wrote:

If you can locate the two wires going to the magnetron filament,
you should see someting less than 100 ohms for the filament.

I was wondering WHERE the magnetron lay.

If these are the magnetron leads, they read 0.4 ohms with the Fluke in
ohms mode:
http://www2.picturepush.com/photo/a/...g/11714385.jpg

And, the diode reads OL in both directions, both forward biased and
reverse biased with the Fluke 75 in the diode mode:
http://www3.picturepush.com/photo/a/...g/11714386.jpg


If you are only on the filiment of the megatron and not in the circuit it is
probably ok. If the megatron is still connected, you may be meauring the
filiment windings of the transformer.

Some high voltage diodes are made of several lower voltage units in series
in the same case. The diode function of the Fluke may not have enough
voltage to check this out and will show open. Here is one way to check to
see if it is actually open.
http://www.flickr.com/photos/zenzoidman/4724416181/

They use a 9 volt battery and the voltage scale of the meter, One way will
show open and the other will show a few volts less than 9 if the diode is
good.