Hello All,
Long time Lurker with a problem hopefully the group can help me solve. I’ve had a a Fire! Machine for ten years now. It works quite well with one hiccup. About five years ago when I was playing it I noticed that heart stopping smell of burnt electronics and smoke.
The upper left slingshot coil/solenoid was obviously burnt to a crisp. I checked all the fuses and did my best inspection of all the electronics to see any potential source of the problem to include fuses, fried capacitors, diodes, resisters etc.
Not finding any other obvious problems I went ahead and replaced the solenoid/coil. After repairing it the slingshot still did not work. However, there was no new smell of anything burning or anything on fire.
I then just for fun tested the functionality of the slingshot solenoid/coil by hotwiring it to the working solenoid on the upper right. When I activated the upper right slingshot, both solenoid/coils fired, which tells me that I had a correctly working solenoid on the left as well.
I tested the resistor on the left slingshot and it seemed to register as specified, I swapped out the one leaf switches which include the resistor and capacitor with a used one I had and the unit still did not fire. However, the solenoid at this point did remain “on.” I turned off the machine after 10 seconds so likely I did not fry anything.
I reversed the black orange wires on the switch (maybe I wired it in wrong) and the sling shot did not fire but it also did not remain on.
So after this long diatribe, I was wondering where I should I look next? Is there something on the MPU I need to investigate? (Somewhere I read U7 may be responsible for this slingshot.)
Any help would be appreciated
Fortunately my PinBot is still in good shape