ajcrm125
Well-known member
Note to all of those who recently purchased the CoinUp 1UPs from me,
I have had at least 2 occurances where people have had trouble using them in Taito cabs. I took some voltage readings of one installed on a Jungle King and found that after 'borrowing' some power from the game PCB as the CoinUp is designed to do, the VCC voltage and the signals going to the game PCB were in the 2V range. That's not enough. Not enough to power the CoinUp and can can cause erratic coin and start behavior.
I replicated the situation here in the lab using the same size pullups in the game. If I hookup the +5v to the terminal block though... everything works just fine since the coinup is now getting plenty of power.
So a word of advice to those who are having issues.. try hooking up +5 to the device and see if that helps.
My apologies for the churn.... all of the games I have tested to date (with the exception of the Taito's) have worked fine so they must have stronger pullups.
I have had at least 2 occurances where people have had trouble using them in Taito cabs. I took some voltage readings of one installed on a Jungle King and found that after 'borrowing' some power from the game PCB as the CoinUp is designed to do, the VCC voltage and the signals going to the game PCB were in the 2V range. That's not enough. Not enough to power the CoinUp and can can cause erratic coin and start behavior.
I replicated the situation here in the lab using the same size pullups in the game. If I hookup the +5v to the terminal block though... everything works just fine since the coinup is now getting plenty of power.
So a word of advice to those who are having issues.. try hooking up +5 to the device and see if that helps.
My apologies for the churn.... all of the games I have tested to date (with the exception of the Taito's) have worked fine so they must have stronger pullups.

