blackbeans

69 MOhm is not very likely in a larger housing. Resistors can shift in value but they rarely break without any visual damage.

I would first check for broken solder joints on parts that get warm and check if the relay is performing as intended.

Beta tapes are 480i, 720x480 interlaced

That’s more than enough resolution to clearly identify faces.

Not so sure about that. Actually tv in the '90s was not that bad. In terms of resolution it looked similar to 480p video, but without any artifacts. Furthermore due to the nature of how a CRT works, those tvs actually had less motion blur than flat screens.