I am also experiencing an issue. One of my locks are not fully unlocking. I would push the button, the voice would activate but the slide doed not move. The light next to the slide switch blinks. After a few times, I realized the power lock is not fully retracting, assuming the main slide motor will be locked out until the power lock is fully retracted. I contacted newmar, they cannot get these power locks anymore but I can send mine in to be refurbished for $267. A piece. I believe the weld has broke on bottom portion of arm. Goodluck..
2004 Newmar Mountain Aire 4301
Spartan Mountain Master GT