1993 Magnavox issue

[jstout66]

Well…. Looks like the 1993 Magnavox decided to fail after 20 years of use.
Interesting back story on this one…. I found it at an estate sale almost 10 years ago, and bought it for my parents. My mom has ALWAYS had a console TV, and their 1979 26” Sony had developed high-voltage issues. Mom is quite picky concerning the cabinet style and it was hard finding just the right set, even then. It had to be oak…solid wood.. remote..stereo..AND 1 st of RCA inputs, and this fit the bill.
My parents retired around that time, so it’s seen almost 10 years of HARD use, but still had an outstanding picture. I’m debating whether to throw it out, or see if one of our 2 repair places will even bother working on a CRT set at this point.
Here’s the ODD symptoms, so am posting this to see if one of you might have an idea of what I’m in store for. “radiotvnut” had a youtube video on the same chassis, and it kind of points to something similar.
When powered on, it works briefly, but then looses horizontal sync . Here’s where it gets really odd. When turned on, it won’t turn off. ( power switch/or remote) If you hold the power button, the picture gets super bright, with a slight wave in the picture, but.. it won’t turn off. You have to unplug it.
Anybody see this, on this chassis before? I kind of picked up from “radiotvnut” this wasn’t the best NAP chassis.