Ok - so got a Sega Game Gear that needed new caps, I could tell because the picture was just barely visible. Replaced most of the caps (still have a few on the way). Now I can see a picture - however the system looks like it needs some more contrast. It has been years since I have played one of these, so I am sure it is just the LCD technology of the time that Sega chose.
Here is one major issue - batteries don't work. I could only get it to power using an AC Adapter. The battery tray had a ton of corrosion. Figured I probably just need to clean the hell out of the pins? Maybe something was damaged nearby? I know this isn't a Sega forum but thought I would just start here before posting on some Sega Forums.