I fixed stuck switches on my own to resolve an issue with the 100's and 10's sticking (which stopped all scoring from the start of a game), so that is all fixed. This one seems a bit deeper than that.
The game now will score correctly until it hits the first 1,000 points, whether that be by hitting a switch which gives 1,000, collecting bonus (I believe), OR even through natural progression like hitting an 100 point target 10 times. It WILL score the first 1,000 correctly. Once the score goes > 1,000, all scoring stops. Chimes ring once more for each digit when hit and then no longer chime again after 1 time.
After 1,000+ (if you had something like 800 points then hit the 1,000 switch to score 1,800, etc., results would be the same):
- All digits stop scoring
- 1,000 relay in backbox locks on
- 1,000 chime locks on
- Score reel doesn't seem to lock on (since it already scored that?)
- If manually pushed, or scored legitimately, all other digit relays will lock on after that point except the 10's which seems to unlock all after pushed several times to where it rolls over the 100's digit
- Match unit coil locks on (Temporarily disconnected by person I bought it from due to stuck 100 switch which was resolved, but when easily connected)
This carries over into every ball and every player without pause once it has started, with the only way to stop it is by power cycling the game or I presume by finishing the game, haven't tried that but I would imagine. When playing a game bigger than 1 player if you get to this state and get each relay to lock on by scoring a point in that digit, each following player will start with 01,110 points as a result due to the relays locking on. The reels don't stick on for whatever reason during this problem, they just score once and not again. Last digit is the fake reel digit and the biggest digit seems to be coil controlled only so it has no relay(?) which explains that.
The official 1,000 point manual reference/schematic for this game is attached below.
Also, sometimes the game will cycle the ball count unit too many times, skipping chances to play a ball, similar to if you hold down the trough switch. (Is this normal behavior?) Ball seems to come out fine. This is random and can do anything from eliminate all balls after the first or work completely fine the whole game. It will cycle through each ball correctly (you can watch the ball count go up by 1 each time) which is good but it cycles too many times sometimes.
Most EM's I've experienced and owned have a second switch somewhere along the trough that counts that the ball got through okay. For instance, I have a Gottlieb pin that has trouble shooting out the ball and sometimes takes several tries (to be repaired) to do that but the count will not advance until it's ready to be played correctly, sometimes 3-5 tries of shooting it out into the lane later but it still waits to advance the ball count. Perhaps on my Strato-Flite this switch is stuck closed if it has one? I'll check later. You can manually trigger only that one switch and it will advance the ball count, not sure if Williams games have this second switch or not.