Earlier last week i scored a CX-22 Trakball from ebay for a fairly low price (10.50 shipped) I wasn't expecting much, however it did say tested and working..so i took a shot.
Once i got it home, i could feel the ball was noisy and sticking horribly. Again, expected. I plugged it into my 7800 straight away, and of course, nothing worked but the left fire button, using Centipede7800 (official release) to test it. Zero movement.
I opened it up, Gave the ball a serious soak, Cleaned all the rollers, and Bearings, cleaned the housing and board as best i could.
first thing i noticed (beside the filthy gunky rollers and ball) was the wiring felt "off" like perhaps it was worked on, as there was a good amount of electrical tape just holding stuff together.
At this time i should point out i know zero about electronics/circuitry/soldering etc.
i noticed the center post of the right fire button was broken, so i left that be for now. I plugged it back in, while open, and fired up centipede. Both buttons worked when pressing directly on the board it'self, and there was some movement when spinning the wheels.
after a good 3 hours of cleaning i put it back together, hit the 'Pede again, and now i had some movement, however seriously eradic.
the "ship/player/character/w.e." automatically moved to the upper left or lower right. With some heavy pressure rolling, i was at least able to move the character around somewhat, although nowhere near playable, at least it was moving....
This is where i am kinda stuck. I know it's a shot in the dark but i assumed since there was "some" movement after cleaning, that it's just a physical thing. But it's probably electrical huh?
i checked some much older threads, and a few people mentioned testing via a meter. Again, i have zero knowledge let alone the equipment. Would there be any other troubleshooting someone could walk me through? or perhaps if i posted photos of specific areas?
PS i tested with it in joystick and TB mode, and it's basically the same.
Any help would be appreciated, i would just love to see my little girl blasting bugs with a trakball, she fell inlove with an arcade cabinet of Centipede at her summer camp, and it would be magical to surprise her!