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

sexton_mallard · 6th Jan 2019, 1:20 pm

A basic clean of the set was done and a check of the tube heater voltage - 10.6 to 10.8v which is not far from the spec of 11v max. The contrast control is flaky - I can't set the contrast right and the set shows flyback lines most of the time. The tube is nice and bright and apart from the contrast, displays a good picture. Would this set use mean level A.G.C which is not working?

6th Jan 2019, 1:20 pm	#2
sexton_mallard Heptode Join Date: Sep 2013 Location: Ellesmere, Shropshire, UK & Co. Cork, Ireland. Posts: 501	Re: Ferguson 3840 A basic clean of the set was done and a check of the tube heater voltage - 10.6 to 10.8v which is not far from the spec of 11v max. The contrast control is flaky - I can't set the contrast right and the set shows flyback lines most of the time. The tube is nice and bright and apart from the contrast, displays a good picture. Would this set use mean level A.G.C which is not working? Attached Thumbnails __________________ Dom Less snakes...more ladders!