View Single Post
  #730  
Old 10-22-2022, 06:49 PM
Username1's Avatar
Username1 Username1 is offline
Not sure how I got here.
 
Join Date: Dec 2009
Location: Orange County NY
Posts: 3,641
Hi

I believe measuring resistance from one side of the IF Coupling Transformers, or IF Coils
is not necessary, and you can achieve better results measuring voltages, like for example
Pin 7 of V1, and and Pin 2 of V2. If the Primary, & Secondary had some short, or leakage
it would show itself with 200V on one side, if the insulation were to break down at the
200V operating voltage it would show on grid of V2, and be more telling.

I'm wondering what the voltage on pin 8 of V2 is...? They are almost the same circuit,
and with almost the same voltages on all the same tube pins......
Same resistor voltage dividers too......

I'm also wondering if these voltages are a result of no signal from the tuner....

Have you tried hooking up your tuner subber to this tv & putting a signal on it
and leaving the tuner power plug hooked up to the tuner, but just removing the RCA
plug to the IF, & putting the Tuner Sub box in..... And then measure these voltages...?

.
__________________
Yes you can call me "Squirrel boy"
Reply With Quote
Audiokarma