Question about Sony FD Trinitron WEGA KV-36FS120 36" TV
My Sony Trinitron is starting to be dull and blurry on each side of the screen, but it seems fine in the middle. Does this mean the picture tube is going bad?
Try tweaking the focus knob on the flyback transformer, worked for me on my 32" kh-32fs13 Flat screen Sony Trinitron!
There will be 2 knobs on the transformer, one that says picture and one that says focus, tweak the focus knob.
You're going to have to open back cover so be careful High VOLTAGES!
Posted on Nov 14, 2011
I would say that might be the problem, but it might also be a HV problem. I had posted this before and it might help you:
This may be a CRT problem. From what it sounds like i.e. dim picture, colors not bright. If you have a background in electronics I would tell you to check the voltage levels on the CRT pins and compare them to the values on a schematic, however if you do not have a background in electronics, I would suggest you taking the TV to your local TV repair shop and have them troubleshoot your problem.
Here is a possible list of things that might be wrong:
1) CRT going bad (The shop can try CRT rejuvenation if needed)
2) High Voltage on the anode not at proper levels (The shop can check this with a HV probe)
3) Video output levels low (The shop can check the voltage and signal levels on the CRT socket board, and on the video amplifiers.
These are the three primary possible issues.
I hope this helps,
Posted on Nov 22, 2008
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Posted on Jan 02, 2017
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