I've seen this before (not sure what it is) maybe like it booted wrong or something - also met a guy whos sttng started screwing up and adding different music and speech calls, where there were none (even things not in the game) - That was very weird.

Gremlins...

Was it anywhere near a Twilight Zone?

Hello gweempose,

I think that my sttng has the same issue today as you 2 years ago ..:
it's going crazy suddenly and light on the extraball, gives me jackpot, and so on ...

did you solve this problem ?
thank you,
best regards,

Volfoni

Bri,

Possibly an opto board(s) or controller. There are opto's all over that damn game and if the controller starts reading them incorrectly i could see it triggering modes and ball firings all over the place.

Just a thought, not an answer. Check all the opto's for loose connections maybe?

Thanks a lot for your answer,
I've a newbie question , sorry : I've already changed one opto board a few years ago: I had 2 balls each time : one led was damaged, so I changed this board near the trigger which throws the ball,
but are there any other opto boards ?

I saw some topics here talking about a failing opto board, is it this little board I changed a day?
I'm going to test the leds soon with a digital cam

thank you,
cheers

Have you added a lot of mods to your STTNG that use 12vdc? The 12vdc on that pin is already pretty loaded down with just the stock optos and stuff. With some age, the 12 volt bridges can weaken and not put out enough power.

If you start adding a lit topper, color DMD and other mods that run off it, you can make your optos go nuts because they aren't getting enough power to run properly.

Hello,

sorry (I'm french):. I did not understand : "added a lot of mods" ? do you mean if I ever upgraded a day my 12vdc or if I added some lamp or anything else which could decrease my electrical power? : if so, no

I can test it with my multimeter if you think I should do ?

if so, no, I never changed anything except the opto board

thank you