CRT flickering

[TK86079]

Hi, when I Turn on my Cabinet, the Picture flickers for a few minutes when it warmes up. The picture looks fine when the Tube is warm. When Im right it is a Wells Gradener K4900 25“
A Cap kit was installed 2 years ago.
My fear is, it might be the beginning of the end for the tube.
Maybe someone knows this issue.
Thanks and Greetings.

 

[max 330 mega]

Ill let someone more knowledgeable weigh in, but that doesnt sound like the tube dying to me. Tubes become dim or a color gun will permanently short, i dont think this is related.

 

[TK86079]

Ok, I hope it’s possible to repair.

 

[max 330 mega]

It sounds like a bad cap to me.... You sure high temp caps were used on the recap?

 

[CORY]

Yep, the fact that it has to warm up to get better points out a cap issue in my experience. Change the horizontal transistor while you're at it.

 

[TK86079]

Thanks, I will give it a try.

 

[thegreathopper]

Or a dry joint, most of my CRT chassis fixes have been reflowing solder joints on the pcb, look for any grey joints or any that have a crack or gap around the component where it comes through the pcb.