Viewfinder flickers like someone is flicking on and off the power to
it. I've replaced the CRT tube inside of it, with same problem. It
has a sleeve with wound copper wire that the CRT slips inside of.
Could this be where the problem lies? Other than this, it records
good still, and plays video fine thru the video out.

Model is CC407
RCA VHS Camcorder - OLD!