2HitWonder
Active member
Looking for some help here. I just bought a Ring King PCB from Quartercade that was listed as tested and working. It was shipped to me and I am installing in my old Zaxxon cab. I definitely need to work on the monitor connections for my finicky k4600 to keep it from rolling and curling, but I will get to that later.
I got the harness wired up and fired it up the first time, and get a grid screen (see picture). I did get it to boot one time early on, but the image was faint and upside down and it would not do anything else including no sound. I have not been able to get it to boot since.
I later discovered that the pinout on arcade museum is incorrect in not listing a -5V connection. After reading the manual, I hooked up the -5V, but still am only getting the grid screen most of the time after a brief attempt at booting. The only times I can get it to not go grid screen it gives me "A5BD" alone on the screen, and upside down (see picture). Tried the PCB in another machine and got the same grid result.
I have checked my voltages on the PCB traces and they are right where they should be, so I am looking for suggestions as what to try next.
I got the harness wired up and fired it up the first time, and get a grid screen (see picture). I did get it to boot one time early on, but the image was faint and upside down and it would not do anything else including no sound. I have not been able to get it to boot since.
I later discovered that the pinout on arcade museum is incorrect in not listing a -5V connection. After reading the manual, I hooked up the -5V, but still am only getting the grid screen most of the time after a brief attempt at booting. The only times I can get it to not go grid screen it gives me "A5BD" alone on the screen, and upside down (see picture). Tried the PCB in another machine and got the same grid result.
I have checked my voltages on the PCB traces and they are right where they should be, so I am looking for suggestions as what to try next.
