I have a happ trackball 2 1/4" I think green boards I hooked it up to a 60 in 1 and everything worked well for a week or two now it only goes up and down or left to right if I change boards around I tested everything on the board except the optic sensor and chip because I have no Idea how to test them. Is it worth trying to track down the components or just buy a new trackball ? the chip is 74hc14ap which no retailer seems to have and none on ebay. If I should just buy a new one any recommendations?
