Time Machine
Data East, 1988I have been sorting out some switch matrix problems on my DE Time Machine. I have run into a scenario where the switches work in the test mode, but they don't register during game play. Is this a rom or other memory issue? Perhaps a cold solder somewhere?
Are you using your finger to test the switch or a ball? Does the switch work sporadically or not at all in game play? Your finger maybe able to press the switch further than the ball is capable of. Had the same issue. Just had to bend the switch lever up a bit more so the ball activated it sooner. Give that a try.
Quoted from ArcadiusMaximus:Are you using your finger to test the switch or a ball? Does the switch work sporadically or not at all in game play? Your finger maybe able to press the switch further than the ball is capable of. Had the same issue. Just had to bend the switch lever up a bit more so the ball activated it sooner. Give that a try.
This would be my first guess, but more info would be helpful. How many switches exhibit this behavior and are they in the same row or column?
Works perfectly with my finger in test. Does not work with my finger in a game. Two switches in the same column in series. The transistor kept blowing due to a short in the pop bumper, it could have easily blown some diodes. I am confused why the test treat the switches differently than game, but I will check all the switch diodes.
Test the diodes on the problem switches using a multimeter. If they are bad, just replace them. Then go from there.
This may sound crazy, but I had a similar issue on Time Machine with a switch doing the same thing. I drove me nuts. I replaced EVERYTHING. Switch, Diode, Transistor... Turned out to be the ROMS after figuring some stuff out that the software was not reading the switch properly in gameplay. Doesn't happen to be your left outlane does it. Anyway, I replaced the ROMS and the issue is gone.
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