Have been trying to troubleshoot a problem for a few months now where the lamps lit on the playfield bear no connection to what's happening during the game. Lamps are not burned out - they all physically work. All or most will often be on when I first start a game, but progressing through features like peasants, exploding castles, and extra balls doesn't change what is lit up or what shuts off. I tried removing and reseating all the ribbon cables, to no avail. Anyone ever encountered this issue before? Feels like a more serious circuit board issue...