Motorola 19k3 chassis ts-101 help needed

[kramden66]

The other pin voltages are correct , I can try another tube but that's probably not the problem .
Btw the pin reads 0 if the tubes pulled .

[Kevin Kuehn]

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.

[jr_tech]

Originally Posted by kramden66

The other pin voltages are correct , I can try another tube but that's probably not the problem .
Btw the pin reads 0 if the tubes pulled .

Tube may have grid emission.

jr