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Hi,
I work again on the set and measured all caps and the are spot on, only one, C98 was 10% higher than expected, still decent. I tried to tune B1 in L14 but with only little effect, max frequency 12.3kHz. I then changed C101 to 10nF instead of 20, frequency went up to 14.5kHz, changed it again to 5nF and now I have a very decent range going from 14k to way over 16kHz. The pulse at the horiz. output X20 is now very clean and steady. (before I could see some unwanted spikes). I applied a signal and I could sync it but kinda wobbly, not stable. I adjusted the horiz drive and it somehow improved it but still not OK.
I don't know if the coil L14 could be bad, if it is the case, I could take it from another set and try it. I am a bit concerned by the big difference in C101 to make work.
With C101 changed, do I also need to change C99/C100. I think C98 is outside and does not influence the frequency.
Getting somewhere!!!!
with a signal applied, it is also rather noisy. but this will be the next problem.
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