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Hi,
in last week end no time to work on this,
but this evening I found two things:
1) R557 increased from 5.6Meg to 27Meg ( tomorrow I will change)
2) someone in the past changed C549 (cathode of final video amplifier)
from 470pF to 100uF. I don't have one, I put a 1nF but the contrast in the
screen is very reduced compared to the 100uF.
In attach the pic of the signals at grid of video amplifier (TP5)
and node between F902 and K112.
I hope tomorrow I will get more news.
bye
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