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

collisr · 25th May 2021, 3:23 pm

Hello everyone.

Not seen this before on a U-matic deck. This machine I acquired has a play fault as shown in the video.

https://youtu.be/bcozuO1p0H8

I have cleaned the sync-head. Replaced the reel-drive belt, cleaned the capstan. The "servo" light on the machine remains lit. The tracking control does not seem to make any difference to the problem

Any ideas on what this might be? I have a junker machine to swap boards but do you think this would be the servo board or the video board (assuming I have eliminated obvious mechanical issues) ?

25th May 2021, 3:23 pm	#1
collisr Pentode Join Date: Oct 2016 Location: Ware, Herts, UK Posts: 171	Sony U-matic VO5850 tracking and/or sync track issue Hello everyone. Not seen this before on a U-matic deck. This machine I acquired has a play fault as shown in the video. https://youtu.be/bcozuO1p0H8 I have cleaned the sync-head. Replaced the reel-drive belt, cleaned the capstan. The "servo" light on the machine remains lit. The tracking control does not seem to make any difference to the problem Any ideas on what this might be? I have a junker machine to swap boards but do you think this would be the servo board or the video board (assuming I have eliminated obvious mechanical issues) ?