Provided that you have given a good confirmed signal into the VCR or is using the tuner to record. If so then the fault is within the VCR recording biasing of the signal. The rrecorrded signals ahve to eb written to the tapes after mixing up the spectrum of information that comes along. failure of theprocessing IC must be the fault to this and will require expert testing within the VCR for signal trace before we can pinpoint. I hope you will need expert help to confirm onthe head amp section/ video processing stages preferably with the manual in hand. Helpful to decide? Good day
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