21fb j p22

[timmy]

Originally Posted by Yamamaya42

I'm not sure which one you got and opened, but the way that most work is on 2 levels, first is by boosting heater voltage from 6.3 to at least a volt or more higher via a transformer in most cases, second is by isolation which may sometimes help in H-K shorts.

These brighteners came red green and blue depending on what gun is weak the pic is for the red gun they are colored. I had taken a green one apart and the heater connection is not touched at all just wires from the gun that will be boosted to a resistor and a pot that’s it