Worn CRT or other issue? (Sony)

[zeno]

If increasing the filament voltage didnt help it almost proves it is NOT
a weak CRT.
BTW For basket cases on older solid state sets with an open core FBT you
could add a winding to the filament by wrapping it around the core once.
If you do it use a scope to be sure not to increase the P-P more than abt
25%. We did this to get a set picked up & at least get the estimate
charge. Often they would get a year or two out of it & delay what was once
an expensive replacement.

73 Zeno
LFOD !

Originally Posted by grossbard

Thanks for the info zeno. I might try that, but I may just leave well enough alone.

@old coot88 I did try that, but it didn't seem to have any effect.