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Are you sure this isn't a termination issue? Do the retrace lines appear on a blank raster (no video)?
I had this symptom when trying to hack an RCA connector onto one of those 5" b/w Sony Watchman sets, so I could have video in. Retrace would appear only when fed through an external source instead of the tuner. I think you needed to slip a resistor in between the RCA and the IC pin so it would be terminated properly, although I never tried. Could've been something on the neckboard too.
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06-21-2024, 05:35 PM
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