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  #19  
Old 12-07-2017, 12:42 AM
Kevin Kuehn's Avatar
Kevin Kuehn Kevin Kuehn is offline
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Join Date: Jan 2011
Location: WI
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I looked at Riders and they say -.5V. on pin 1. Sams shows with their dotted lines and x's an optional circuit for the cathode(contrast control)circuit. Do you have the simple pot in series with the cathode to ground, or do you have the version with all the extra's?

Make sure that 1M resistor from grid to ground hasn't drifted way up in value.
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