UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

dazzlevision · 17th Sep 2022, 5:33 pm

The white box is the focus electrode spark gap and the white blob may just be silicone sealant.....perhaps applied by a previous repairer in order to stop corona discharge or flashover....?

I'd carefully clean all that tar deposit off or you may have tracking/arcing problems.

17th Sep 2022, 5:33 pm	#2
dazzlevision Dekatron Join Date: Sep 2003 Location: Near Swindon, North Wiltshire, UK. Posts: 3,622	Re: Grundig CUC 220 Restoration The white box is the focus electrode spark gap and the white blob may just be silicone sealant.....perhaps applied by a previous repairer in order to stop corona discharge or flashover....? I'd carefully clean all that tar deposit off or you may have tracking/arcing problems.