Sync symptoms

[DaveWM]

btw the AGC will effect the signal enough to clip the sync pulse out, but allowing the audio and video to get thru, causing tearing ect.

by injecting the composite video you can determine where the defect is, either before or after that point. if it still goes bad with the composit video, then the IF and AGC and Tuner are prob ok.

since its heat related I would think the cooling spray on the sync sep network would most likely prove that out.