bicyclenut
Member
I just put a new track ball in my centipede game and it works great but it seems to keep moving when I take my hand off the ball. Is that normal or do I have something wired wrong?
Thanks for any help
Thanks for any help
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The sprite keeps moving on the screen after the ball stops moving?
Yes, it keeps moving after I have stopped moving the ball. Usually to the left or right. Tying to enter your initials is almost impossible.
Check your ground wires to the trackball inputs.
you might have a lose connection on your connectors. though i don't understand why it would only affect your control when entering initials, however your symptoms sound like a issue with the wiring causing spurious bad connections. it is possible that your pcb is bad too, but doesn't sound like it.
have you put the game in "test mode" does the sprites in teh middle of the screen move by themself or do the grid of numbers on the left change in test mode?
you might have a lose connection on your connectors. though i don't understand why it would only affect your control when entering initials, however your symptoms sound like a issue with the wiring causing spurious bad connections. it is possible that your pcb is bad too, but doesn't sound like it.
have you put the game in "test mode" does the sprites in teh middle of the screen move by themself or do the grid of numbers on the left change in test mode?
Ok disconnect the trackball encoders cabling and recheck that should tell you if it's the pcb or not
Ok disconnect the trackball encoders cabling and recheck that should tell you if it's the pcb or not
ok, did that and the numbers stopped. So you think its in the wiring?
Oh really? Yeah that most likely means wiring or the encoder boards but I think you said they were swapped out with another set with no change?
Oh really? Yeah that most likely means wiring or the encoder boards but I think you said they were swapped out with another set with no change?
Ok, finally following up on this thread. I got it working. It was the power supply. The big capacitor. Once replaced, everything works great.