did the battery test and it lights up. did the dmm and get 14.22vdc

Now I have 2 x driver pcb's and did a swap to the current one and the problem came back within a week or two. So if the chip is fried, what could be causing it?

Also as a side note, yesterday the neon did come on again for a minute or two. Since I have had this game the neon has been a bit suspect. I would have to turn the game on and off a few times to get it to work. Hope this info helps a little