View Single Post
Old 23rd Sep 2020, 8:33 pm   #7
high_vacuum_house
Octode
 
high_vacuum_house's Avatar
 
Join Date: May 2003
Location: Belper Derbyshire
Posts: 1,935
Default Re: My first foray into Old model TV repairs.

Quote:
Originally Posted by AdrianH View Post
Here is a picture of the crack on the neck, I can feel this in both directions with my fingernail.

Attachment 216294

It is possible it is just a score on the tube, but I will look at options to either replace or get another TV if it is the worst case.

There are no outward signs, I would have expected to see such as missing coating on the front, or any getter coating going white, but I suspect that would be under the yoke?

I think I need to apply 6.3 Volts.

Adrian

I think that is defiantly a scratch. If it was a crack I would expect that the crack would encircle the neck altogether.

P.S don't worry about the apparent misalignment of the electron gun in the CRT. This is part of the ion trap arrangement. There should be a small magnet on a band around the neck somewhere. You would need this and it's correct orientation to get light on the screen. It looks missing to me.


Christopher Capener
__________________
Interests in the collection and restoration of Tefifon players and 405 line television
high_vacuum_house is offline