Re: Sony KV-A2942U very soft focus in middle of screen
The static convergence is OK and only this, as the service manual states, is adjusted by the ring magnets fixed to the neck of the CRT.
You need to follow the Sony Service Manual instructions for dynamic convergence which is very similar to PIL CRT instructions.
Unless seen otherwise, purity seems OK.
With the screen viewed by a mirror, leaning over the set will not do, remove the rubber bungs etc and using gloves, move the scan coils about their axis and you will soon get the hang of it. Just remember in the Sony factory staff not robots did this every day.
I appreciate the comment that a BVM monitor is on a different planet to a domestic receiver and dynamic focus does work very well but until the convergence is correct, you will not get anywhere.
Good luck
Chris
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