wrongdon
New member
Hi all,
I have been working on this space invaders deluxe midway boardset for some time now,and i finally have it playing blind.No output to monitor or when hooked to tv.Work i have done is replaced 7 of the rams and rebuilt the power supply board.The game plays blind and has most sounds,so ill be placing an order for the LM3900's soon.Now is it strange for the board to run at 4.66 - 4.78 volts on the +5. The closer i get to 5,the ram errors start popping up,yes i have the multi kit in it.The errors seem random,ram1 a couple times,then say 7,maybe 16.So i just turn down the voltage till it is happy.If i turn it up to +5 volts,it says ram 1 ,which i have replaced 2x to be sure.
anyways,,thank you for your time.I figure i'll kick this around a bit more before i send it out or purchase a working set.
I have been working on this space invaders deluxe midway boardset for some time now,and i finally have it playing blind.No output to monitor or when hooked to tv.Work i have done is replaced 7 of the rams and rebuilt the power supply board.The game plays blind and has most sounds,so ill be placing an order for the LM3900's soon.Now is it strange for the board to run at 4.66 - 4.78 volts on the +5. The closer i get to 5,the ram errors start popping up,yes i have the multi kit in it.The errors seem random,ram1 a couple times,then say 7,maybe 16.So i just turn down the voltage till it is happy.If i turn it up to +5 volts,it says ram 1 ,which i have replaced 2x to be sure.
anyways,,thank you for your time.I figure i'll kick this around a bit more before i send it out or purchase a working set.
