Just picked up a Seawitch today. Have not had time to go over the game yet but I did notice when playing a test game that the Extra ball lamp in the left inlane stays lit the entire game.
I'm sure it will be an easy fix but before I get into the game tomorrow afternoon I figured I may as well ask the experts here what I will need to check out first.
I do have a new lamp control board on the way as I will be putting in LED's eventually.
The game already has an Alltek MPU board installed.

I thought as much.
If that is the case I will just let the new board take care of the issue.

No LED's at all in this game.
No telling when the last time the playfield was lifted.
The lockdown bar literally had two holes drilled through it with long screws inserted down through the lock mech and was bolted down so tight we like to never got it off. lol.
Wish I had taken a pic Jodester, but I will send you one later tomorrow in a text. Incredible what people will do.

So on another note, anyone know where to get a replacement lockdown bar for this game? From my searches so far no one seems to have them.