Bullard MX Thermal Camera teardown/repair

[Real-Time]

Hi all, I picked up a thermal camera for cheap on ebay a couple of days ago and I figured it would need some repair since it's 20 years old.

I thought it was fairly simple inside, camera module was hooked to a Taiwanese LCD module by a 4 wire connector with a board in the middle to amplify the video and handle the batteries and what not.

Here is the camera module.

There was a little through-hole voltage regulator stuck to the outside of the camera housing.

So now I know that I can feed this thing anywhere from 6.5 to 15.5 volts. I'll stick with 10 since that appears to be the battery voltage. I hooked up the voltage wires and the composite video to my monitor. At this point I was expecting to see the video feed, not this.

This thing is more complicated than I had initially suspected.
After a couple of seconds, we get the main user interface. The circular pattern is due to the camera, but the horizontal lines are in the video signal. The signal itself is pretty dirty and likes to jump around.


So this is where I am, whatever is trying to generate the video signal is not happy, and I suspect that the culprit is a dirty power supply rail somewhere on the thermal camera side of the circuit board. The unit emits a high pitched whine while powered and has a strange smell to it. There are about 30 SMD electrolytic capacitors as well as 15 or so tantalums. The output of the 5v power supply glued to the side of the camera seems fine, but the 10v input power doesn't look great while the unit is powered.
I've been looking into the chips on the board in order to understand how it works, and of particular interest is a BT866KPF digital video encoder. I'm pretty sure it overlays the green crosshair and scale onto the video output. Since I have video output, I assume that the circuit is good up to this point. There are separate inputs for the overlay and the base video.

 I really am not sure how to proceed at this point, though testing every voltage rail I can find would be a start. I'd appreciate any advice anyone can give me. I'll attach some additional photos at the end of the post.