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.
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[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.

[VWestlife]

Try it outdoors. Tube image sensors need a lot of light to get a good image. Normal indoor lighting isn't enough.

Just don't point it directly at the sun or some other extremely bright light source, as that will burn a dark spot on the image sensor.

[Thedrizzle6]

I fixed it with percussive maintenance guys. I whacked it a few times in autofocus mode and the iris opened up finally. Guess the motor needs some oil. Thanks.

[Barrythecrab]

“Percussive maintenance” shall now henceforth and forever more be a part of the A/V vernacular.

[timtape]

If it needs cleaning/oiling, the problem will likely return until that maintenance is done. You didnt initially mention that the iris was closed down.