Motorola ts907 low hv

[Yamamaya42]

Originally Posted by timmy

Well I have v6 coming it’s a 6hs8 in the mail and yes there is a lot of power arrows and that would mess up video and probably take down horizontal with all that power there. I have to wonder what killed the sound all the other times the voltage pulled down I still had sound.maybe for giggles I should put that tube on the tester to get hot and see if anything shows up maybe even put the heater up a notch. I tried it on the tester 7-8 v showing grid emission.

Won't be the same.

The TV has the cathode at 190v
https://frank.pocnet.net/sheets/049/6/6HS8.pdf
Max is 200v

the tester won't go that high for sure.

and you can be sure that in the set that it DOES go over 200v before everything heats up anyway.
so IF the tube is shorting, there is a good chance that it is mixing AC heater voltage with the 190v bias.
and IF it's failing then AGC is not working the way it should be, making the tuner deaf.