07-03-2012, 10:27 PM
Jayce;
There is a 1,000,000 ohm resistor inside the base of the eye tube socket that is connected between the plate and the target, if it is burned out the tube will not react. Originally they used a 1/4 Watt resistor in this location but use the largest Wattage resistor that you can fit under that cap between the two tube pins, like a 1/2 Watt or better. There are also some other circuits that could cause it not to respond, the tube is driven by AVC voltage so a bad capacitor could also cause that condition. Also if some placed a 6U5 or 6G5 Magic Eye in place of a 6E5 the shadow will react somewhat but not close completely, if you place a 6E5 in place of a 6U5/6G5 the side of the shadow will overlap when closed, the grid bias voltages are different.
Regards
Arran
There is a 1,000,000 ohm resistor inside the base of the eye tube socket that is connected between the plate and the target, if it is burned out the tube will not react. Originally they used a 1/4 Watt resistor in this location but use the largest Wattage resistor that you can fit under that cap between the two tube pins, like a 1/2 Watt or better. There are also some other circuits that could cause it not to respond, the tube is driven by AVC voltage so a bad capacitor could also cause that condition. Also if some placed a 6U5 or 6G5 Magic Eye in place of a 6E5 the shadow will react somewhat but not close completely, if you place a 6E5 in place of a 6U5/6G5 the side of the shadow will overlap when closed, the grid bias voltages are different.
Regards
Arran
