In Reply to: RE: GRAAF GM 200 posted by LuisVinhas on January 10, 2015 at 06:08:54:
The best tube tester is the amplifier itself, for the power tubes. If the tube under test is within the limits for voltage across the anode resistor, it's probably "good". That tells you that under the bias conditions prevailing in the amplifier and with the DC voltage provided by the PS, the tube passes an amount of current that is the same or similar to the other tubes. This should be done with all other sockets occupied by "good" tubes, ideally.
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Follow Ups
- RE: GRAAF GM 200 - Lew 07:48:44 08/21/15 (0)