RCA CTC-16XH Smearing Issue

[damen]

Check the two resistors that make up the voltage divider feeding the grid of the 6GM6 second IF tube. Should be 150K or 180K. This was a very common problem of no snow/hiss off channel. This diagram shows them as R306A and B.

[Yamamaya42]

Originally Posted by damen

Check the two resistors that make up the voltage divider feeding the grid of the 6GM6 second IF tube. Should be 150K or 180K. This was a very common problem of no snow/hiss off channel. This diagram shows them as R306A and B.

correct, R48/R50 they were bad on mine when I started, and got just blank raster.

[Jon1967us]

Originally Posted by Yamamaya42

correct, R48/R50 they were bad on mine when I started, and got just blank raster.

What was the difference in picture quality, once these were replaced?

[Yamamaya42]

Originally Posted by Jon1967us

What was the difference in picture quality, once these were replaced?

i was unable to tune in anything before they were replaced the IF was DEAD

[Jon1967us]

Originally Posted by damen

Check the two resistors that make up the voltage divider feeding the grid of the 6GM6 second IF tube. Should be 150K or 180K. This was a very common problem of no snow/hiss off channel. This diagram shows them as R306A and B.

Checked in circuit, they measure 93k each, which looks consistent with a parallel arrangement.

[Yamamaya42]

Originally Posted by Jon1967us

Checked in circuit, they measure 93k each, which looks consistent with a parallel arrangement.

you must remove them to check them correctly

EDIT

if you have not replaced them yet, do it NOW, as someone once once told they will ALWAYS be bad, and/ or out of spec.
this proved correct in my ctc-16 and GE ctc-15 clone, I put 1w parts.