Help with Magnavox movie maker

[Thedrizzle6]

[Attachment 92318 - Click to enlarge] So this came today. Everything works like a charm but indoors i get absolutely nothing through the viewfinder other than the "light" indicator on screen. Records devent audio but the playback is essentially black unless looking directly at a light source, in this case my bedroom light. Outside its pretty cloudy and bleak today but it did manage to take some footage that was legible when playing back indoors. What could I possibly do to fix this issue? I've tried cleaning the lens and the light receptors on the front as well as giving it a good blow out with air but nothing doing. I'm at my wits end messing with this thing. Really hoping someone here can help me out or at least has encountered this issue with this model before.
[Attachment 92319 - Click to enlarge]
[Attachment 92320 - Click to enlarge]

[ProWo]

Common Newvicon Tube and Camcorder Issues:
Tube Decay: If unused for decades, the gas tube inside can fail, leading to poor or no picture.