JVC Videosphere Sound Working but no Image.

[RS732]

I found a video sphere for really cheap at an estate sale. The tv was filthy and covered in grime,so I opened up the TV to clean up the body a bit.

I'm using a uhf/vhf to coaxial adaptor to a vcr. The screen powers on but shows a blank screen and I can get sound but I can't seem to get the image to display on the screen. I tried all the channels (3,4,U,etc...) and adjusted the tuner but i still can't get the image to display.

Any suggestions?

[RS732]

Update:

I was adjusting the picture height and the tv shut off completely. I disconnected the tv and waited a few minutes, and I retried powering on the TV with out any luck.