I've got a Jurassic-era Fisher TV. This would have been 'da bomb' back in the day: 27", stereo, aux A/V input. Even now it does pretty well (and I can't afford to buy a new TV currently). However, if I use the Video input, there are strong, black, horizontal lines in the picture, slowly moving down the screen. As far as I can tell, this is not caused by electrical noise, and it doesn't occur on the RF/Antenna input. Anyone know what might cause this? Is it fixable? Or should I just not bother, and wait 'til I can buy a new TV? Thanks.