WeirdThe power tx is very hot
YesI see 3.3R // 22R // 100R for Rset in mine, so 2.79R fine tune. You could put 2.8R 5W or your 3R high power rheostat. But is it connected as it should, and is its wiper OK?
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Mine is a dual secondary 9VAC total 30VA so 15VA each secondary150VA if I remember correctly. Has 5V rectifier tube heater winding, dual 9V main tubes heaters wiring and 305+305V HV secondaries with mid point. Custom ordered locally.
No reason to not work like that. Unless there's a weird reason like an oscillation. For ease of mind put 0.1uF decoupling cap across DCin very near to LM317 pins
Could use 150nF? one pin to LM317 pin 3 DCin an the other to gnd right?
Replaced with a new one, but same measurements, BTW if battery low an indicator is displayed. Thanks.Silly question, but does your meter have a fresh battery in it? I was getting weird numbers a while back and a fresh battery made all well again.
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NoDo you have DC clamp meter to quickly check what kind of current runs in the wires?
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