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Old 4th Oct 2022, 7:43 pm   #28
MotorBikeLes
Nonode
 
Join Date: Dec 2012
Location: Kirk Michael, Isle of Man
Posts: 2,346
Default Re: Sony KV-A2942U very soft focus in middle of screen

I had quite a few Grundig TVs through my hands that had been badly "smoked up". I once had a hybrid where the blue tripler had big "holes" in it, probably to prevent tracking across.That TV was so bad that the "holes" in the tripler were solid with cigarette tar.
So I used to wash in hot water and a detergent (something called "Zoom".
After much washing clear with hot water only, I would take it out, still hot from the sink, and hang it up in my boiler house. I would just leave it there for at least a week.
I NEVER had a problem related to the practice.
I have converged many TVs, from G8 onwards, but later spent a couple of years setting up radom CRTs, often changing yokes.
We had a trinitron CRT one day, but I had no suitable chassis in which to test it. What I did do is have a good look at all the stuff attached to the glass, obviously for convergeance. Plastic sticks with a bit of magnetic plastic stuck just about everywhere. I imagine those Sony operatives who did the settings took a while to train to proficiency!
Les.
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