Quote:
Originally Posted by vortalexfan
I checked the filter choke with my ESR/LCR Meter (which also checks resistors and resistance loads) and the filter choke checks out within tolerance of the original specs given in the Sam's Folder, it checked at 27.7 Ohms and 1.69 Henries, which the original specs given in the Sam's Folder for the Choke is 32 Ohms and 1.5 Henries.
As for the individual leads checked to ground, one lead read 254 Ohms and the other lead measured infinite.
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That 254 ohms from one lead to ground reading indicates a short to ground in L1 ( I assume you unsoldered L1s leads from the rest of the circuit)...........
.... however I'm suspicious of that readinds accuracy.
If you measured from 1 lead to another and got 32ohms, then measured 1 lead to ground and got 254ohms to ground then logic says the other lead should have in the neighborhood of 222 to 286 ohms to ground instead of open circuit that you measured(that or the 32 Ohms across the leads is actually open circuit)....
L1 probably is bad but I'd like you to redo all the measurements on it you just made to confirm no mistakes were made, and hopefully this time not obtain numbers that together should be impossible for this part.
Edit:I see progress was made while I was typing.
Do you you have alligator clip leads with an alligator clip on each end of the wire? If so clip one end to a probe on your meter and the other to the test point in circuit. You can do that for both meter leads to do hands free measurement. This may add as much as an ohm to a measurement, but in most tube circuit work that is too small a difference to matter.