IN hurry late other night, had batteries for memory backup sitting at machine for a couple of weeks
Decided to take care of before I wrap up and didn't pay close attention to battery install
tried to turn machine on a couple days later and nothing except tiny faint random letters on screen
immediately checked batteries and notice install was wrong
Checked normal install voltage (+4.5) checked voltage with my wrong install(-1.5)
Surely not Idiot to do this
Is there a diode to protect boards or did I really screw up
Machine is a makino rmc 55