Quoted from TravisRT1985:Update: i tried reseating the greyribbon connector and was able to reseat 1 but another one felt like it might have been glued. The game is no longer flashing like the video shows. I am able to play it but most of the playfield will not light up. There was battery corrosion on the chip right below the batteries. See pics. I'm taking my time with this because i'm learning as i go. Never worked on a pin before.
Clean the battery corrosion, and replace and damaged parts (eprom).
But if it plays and is just missing the lights now that you've clean it up and reseated the cables then replace the controlled lamp fuse that has blown.
The flashing the controlled lamps really bright on and off (and blowing the bulbs and fuses) is sign of battery corrosion on the whitestar boards, they go into this state when they can't load their rom; a crappy failure mode, but a sure sign that there is a problem around the rom socket.
When the controlled lamps get flashed in this manner they get over powered and then the controlled lamp fuse blows. Then you get no playfield lamps. That seems to be where you are now...
The manual is available here.... http://mirror2.ipdb.org/files/4858/Stern_2003_The_Lord_of_the_Rings_English_Manual_complete.pdf
Page 1 lists the fuses, you're looking for F22, controlled lamp fuse; replace with correct size replacement fuse.
Make sure you clean the corrosion off the machine, and not just close it back up if you fix it, else the corrosion will continue to eat at and harm the machine and the repair later will be much, much worse.