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Old 06-06-2017, 08:38 PM
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jr_tech jr_tech is offline
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Quote:
Originally Posted by Eric H View Post
This is the slowest warming set I've ever seen, it takes at least a full minute before I hear the oscillator kick in, did I read somewhere it has some voltage dependent resistors in the heater string? Possibly those black round things in the HV cage?
Yep! I think that those glowbar (sp?) resistors exhibit an increase cold resistance as they age. With the 75 ohm resistors installed, my set produces a full, stable picture in about 20 seconds after turn on. The 6Al5s light up pretty bright at initial turn on, but seem to be holding up ok.

jr

Last edited by jr_tech; 06-06-2017 at 11:02 PM.
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