Quote:
Originally Posted by Yamamaya42
I probably have a weak damper, It's still the Original tube that came with the set, and I'm surprised it still works at all.
The HOT and HV rect have been replaced already.
I am seeing some changes in width and focus as i turn brightness up and down , so I will see what a new damper does.
there were 2 choices for HOTs in this set.
https://i.imgur.com/M0UzLQc.jpg
it came with an original GE 6JS6A which looked very tired, I have a 6HF5 in it now that someone claimed tested at %98.
which i have been running for 3-4 months now.
just on a lark, I put the old tube back in, it came on for 40 sec, shorted out, and blew the breaker, new tube back in and working, YUP, tube was worn out! |
Yeah, that's the only thing I can think of that can be doing it off the top of my head, weak damper, slight changes in horizontal width and focus when brightness is changed, but vert stays almost the same.
This set, like all RCA types up to the CTC-16 line has damper power pulled from the secondary vert output xfomer, at the vertical centering POT, (400v in this set ).
The fact that I see almost no change in vertical height, and the fact that the damper is as old as the set makes me very suspect of it.