Nicolas 2000
Experienced Member
I've soldered through the entire neckboard and the SCART connector. It appears the SCART connection issues and the loss of blue issue are now solved!
With the image quality being as good as it is now, I notice that the ("dynamic?") convergence on the bottom 1/3rd is "1 pixel off" resulting in some reduced apparent sharpness as colors leakup and down of where they should be (I think focus is OK everywhere though, but that's hard to see when the convergence isn't perfect), likely the yoke not being 100% in the correct position yet (see previous pages). Perhaps due to all the Mighty Whacks to get the color going? I'm afraid I might make it worse rather than better though; I don't have all the required tools and it's been a fine art to get the yoke position as good as it currently is. But given that red appears to be a bit too high and blue a bit too low, it really does seem like a vertical yoke alignment issue. Perhaps when I feel brave I'll try and make it better once more. I have easy access to Amiga paint programs now so I can try to make some test image if needed.
Anyway, more important: the "RF tuning to Tandy" issue still isn't solved with the above, obviously. Any pointers on how to check if it's the AGC, the tuner box, or something else? For those who missed it: I can tune into the Tandy on a modern TV, but this 1988 Sony can't lock into it but I can get a very poor image if I stop the autotuning at the right moment.
With the image quality being as good as it is now, I notice that the ("dynamic?") convergence on the bottom 1/3rd is "1 pixel off" resulting in some reduced apparent sharpness as colors leakup and down of where they should be (I think focus is OK everywhere though, but that's hard to see when the convergence isn't perfect), likely the yoke not being 100% in the correct position yet (see previous pages). Perhaps due to all the Mighty Whacks to get the color going? I'm afraid I might make it worse rather than better though; I don't have all the required tools and it's been a fine art to get the yoke position as good as it currently is. But given that red appears to be a bit too high and blue a bit too low, it really does seem like a vertical yoke alignment issue. Perhaps when I feel brave I'll try and make it better once more. I have easy access to Amiga paint programs now so I can try to make some test image if needed.
Anyway, more important: the "RF tuning to Tandy" issue still isn't solved with the above, obviously. Any pointers on how to check if it's the AGC, the tuner box, or something else? For those who missed it: I can tune into the Tandy on a modern TV, but this 1988 Sony can't lock into it but I can get a very poor image if I stop the autotuning at the right moment.
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