To determine the quality crt can be done with
ways:
1. Heater / crt filament voltage supplied roughly four
volts (ac or dc the same).
2. Measure with avometer (position on 1kohm):
Conspicuous black avo avo red plug on the G1 at KR
Coloh black-on G1 avo avo red plug on KG
Conspicuous black avo avo red plug on the G1 at KR
3. The small value of the designated needle avometer ohms,
better the condition of crt
Download schematic tv