UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Sony U-matic VO5850 tracking and/or sync track issue

dj_fivos_sak · 3rd Jun 2021, 7:30 pm

Rob

If there's constant vertical jitter on playback, the head switching postition might need adjustment given that the entire board was replaced. Head switching should occur 6.5 horizontal lines before vertical sync. If switching occurs too early, you will have switching noise on the screen. If it occurs too late, you will lose vertical sync stability.

Fivos

3rd Jun 2021, 7:30 pm	#7
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	Re: Sony U-matic VO5850 tracking and/or sync track issue Rob If there's constant vertical jitter on playback, the head switching postition might need adjustment given that the entire board was replaced. Head switching should occur 6.5 horizontal lines before vertical sync. If switching occurs too early, you will have switching noise on the screen. If it occurs too late, you will lose vertical sync stability. Fivos