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Archived from groups: rec.games.video.arcade.collecting (More info?)
I am troubleshooting a millipede pcb in a centipede cabinet with
arcadeshop converter. centipede works 100% perfectly in this cabinet.
i have gotten millipede to boot and can even start and play a game, but
you cannot move the archer up and down. since i am sure the trackball
works, i am looking at the trackball section of the pcb. which of the
chips in the section would you suspect are bad.
my first inclination is 10L, the 74LS257 that handles control panel
inputs. this chips looks like it has been replaced on my board in the
past. the repair job is not pretty but doesnt look to be shorting
anywhere.
could it also be 10R or 10P?
should i just order all thre from bob and work my way back?
has anyone ever had this issue before? if so what did you do to fix
it. thanks.
phil
I am troubleshooting a millipede pcb in a centipede cabinet with
arcadeshop converter. centipede works 100% perfectly in this cabinet.
i have gotten millipede to boot and can even start and play a game, but
you cannot move the archer up and down. since i am sure the trackball
works, i am looking at the trackball section of the pcb. which of the
chips in the section would you suspect are bad.
my first inclination is 10L, the 74LS257 that handles control panel
inputs. this chips looks like it has been replaced on my board in the
past. the repair job is not pretty but doesnt look to be shorting
anywhere.
could it also be 10R or 10P?
should i just order all thre from bob and work my way back?
has anyone ever had this issue before? if so what did you do to fix
it. thanks.
phil