Today, I went to try to fix someone's Ms. Pac. I turned it on and got garbage on the screen. Pull out the board, and I noticed a chip at location 6D is horribly dirty. I pull the chip and just reseat it...plug it back in and it works.
So, I figure I better do the job right and really clean that chip...pulling it out the second time, however, left 3 legs behind...none of which could be soldered back on.
So, I know this chip is the problem, and I leave thinking I'll just order one and it should work.
Later, I realized that location 6D is where the sync bus controller goes. The chip was old looking...old enough to be very dirty and coroded. What chip was this? Can I still use a regular sync bus controller board there? I have one handy(from a Pac-Man board) and I'll use it if it'll work there.
5D was also just a chip, and this is where the VRAM addresser usually is. This chip was also extremely diry and old looking. Also, there was no daughter board. It was an original board though....just missing the usually parts.
By the way, the game had an "Eldorado" tag on it. :/
So, I figure I better do the job right and really clean that chip...pulling it out the second time, however, left 3 legs behind...none of which could be soldered back on.
So, I know this chip is the problem, and I leave thinking I'll just order one and it should work.
Later, I realized that location 6D is where the sync bus controller goes. The chip was old looking...old enough to be very dirty and coroded. What chip was this? Can I still use a regular sync bus controller board there? I have one handy(from a Pac-Man board) and I'll use it if it'll work there.
5D was also just a chip, and this is where the VRAM addresser usually is. This chip was also extremely diry and old looking. Also, there was no daughter board. It was an original board though....just missing the usually parts.
By the way, the game had an "Eldorado" tag on it. :/