I've got an AP 300 series unit, with the main display freaking out. For some time it gave frequent control unit failures, and the LCD display would go nuts. I don't think it's the brain box however because the remote always seemed to work. Every pic I've seen of these shows dark spots in the LCD (this is the big, rectangular display, not the square box with just rudder angle or heading)

At this point, the main display is completely inoperative, and I want to replace it. Anyone know of a place that repairs these or sells parts?

Thanks,

-Ed G.