Hi all,
I have eight BZ AUX boards in various states of disfunction. Some show L, some H, and some T. There's even one that shows no error but has the radar blip sounding constantly (even in attract). This thread is to detail the troubleshooting process and techniques used to find and fix whatever problems exist on each board.
First, the sockets on these boards seem to come in two varieties: bad and really bad. It's a lot of work, but replacing at least the BPROM sockets in row one is essential for reliability. I'll be replacing them and the five 40-pin sockets to really make the boards as good as they can be. The good news is you can pry up the plastic housings of the sockets to make it easier to desolder the pins individually.
I have eight BZ AUX boards in various states of disfunction. Some show L, some H, and some T. There's even one that shows no error but has the radar blip sounding constantly (even in attract). This thread is to detail the troubleshooting process and techniques used to find and fix whatever problems exist on each board.
First, the sockets on these boards seem to come in two varieties: bad and really bad. It's a lot of work, but replacing at least the BPROM sockets in row one is essential for reliability. I'll be replacing them and the five 40-pin sockets to really make the boards as good as they can be. The good news is you can pry up the plastic housings of the sockets to make it easier to desolder the pins individually.





