Quote:
Originally Posted by dieseljeep
The voltage will read high without a load. The 17CP4 has a 600ma heater. That CRT checker is in like-new condition.
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The tester doesn't read voltage on the scale. It just has that switch that you select your favorite voltage on. It looked like it was putting out more than 6.3 because my 21AUP4A was lit up like a light bulb.