Please see the attached photo.
Note that the automat is powered on, but has no midi connection, and that solenoids 4 and 5 are energized, and stay that way without any external midi input.
Note also that the led’s for #4 and #5 are not on.
This is clearly not a software issue.
If I re-learn the automat, the solenoid or solenoids that stay energized may, or may not, change.
It does not seem to matter if I learn the automat from a usb cable or 5-pin midi din connector.
I had noticed that when using a program like Dadachron to drive the automat, that one solenoid might stay energized when I stopped the program running, and that the solenoid would stay that way until the automat was powered off.
The problem is intermittent, but frequent, and does not seem to do the same thing every time. That is why I got a new set of solenoids and eliminated the software to try to narrow down the problem.
Note that I am making an assumption that solenoids do not care about polarity, so the center pin on the connector might go to a red or a black wire on the solenoid. Since the solenoid is just an electromagnet, I assume that it is not at issue here. If I’m in wrong about that, please correct me.
If it matters, these are small 12v solenoids powered by a one amp 9v power supply. I get the same kinds of issues when using 5v solenoids with the same power supply.
Putting 9v in a solenoid rated at 5v for an instant isn’t a problem, but when the solenoid stays on, the magnet insulation starts to break down. That’s why I waited until I got 12v solenoids to continue troubleshooting this problem.