I recently refurbished a Shadow and clearcoated the playfield. I also washed the entire playfield harness Vid sytle. After reassembling everything all the switches and mechs work fine but I am fighting an issue with the Battlefield single drop target.
When I boot the machine up the 3 amp fuse connected to the magnet and drop down solenoid immediately burns up. The drop down solenoid also gets rather hot. When I unplug the Battlefield drop (and up) solenoids and boot the machine the magnet works fine without blowing the fuse. I have been testing with both slow blow and regular fuses. With the slow blow fuses the solenoid will drop the target one time before burning up. The regular fuses go immediately.
I also completely replaced the fliptronics 2 board because the original had some iffy transistor replacements. These tests are using a new Rottendog Fliptronics 2 board. The drop down solenoid is also brand new as the last one burnt up. The only other fix I have tried is replacing the spring on the Drop Down arm with a weaker one so the solenoid doesn't have to pull as hard.
I am not sure what else to try here. The problem seems to be the Orange-Grey wire that drives the solenoid. It doesn't power any other devices in the machine as far as I can tell.
If you have any recommendations please let me know. I am one working solenoid away from my grail pin working here.