vertical lines in a Toshiba TV

[vol.2]

Thanks for the reply.

Originally Posted by old_tv_nut

Is that picture taken with no signal connected? If so, try connecting a signal and see if they dissappear. This will tell you if it's an RF interference or a conducted interference from horizontal into video on the chassis.

It's 100% most definitely in the picture when a signal is connected.

you might try chasing ground connections between the circuits and also wire dress

I tried dressing some stuff, but not everything. I covered the entire flyback and also the hot lead into the tube with copper electrical insulating tape and it made no difference I could see.

I don't know how to "chase ground connections" exactly. Any guidance on how to do that?