I am in the process of something similar. One of my bedroom window's automatic Roman night shades will not retract (raise) but will extend (lower). Obviously, now that it won't retract the window is blocked. I do not know if your power sun visor uses the same motor as my power shades, but here is what I have found out regarding the bad motor in my coach.
1) The manufacturer of the blinds is Hunter Douglas. I am not sure who manufactured the motors for Hunter Douglas.
2) The motor manufacturer stopped production of the motor in 2010.
3) Replacement motors have been readily available until the past year or two. It's sounding like the inventory is running out.
4) The original Hunter Douglas blind had a five year warranty and typically would last seven to eight years, depending upon use.
5) The Dealer Service Center for Hunter Douglas is looking for a replacement motor for me - started looking today.
6) Most newer model motors are too large to fit into the blind's headrail installed in my coach.
7) I have sent an email to Beaver Coach Sales' Parts Department asking if they have a motor on their shelf. BCS has not replied yet.
![Cool 8)](http://beaveramb.org/forum/Smileys/default/cool.gif)
The likely option for me, assuming a replacement motor is not available, is to make the Roman shade into a manual raise/lower blind.
I hope yours is not the same motor as that found in my power window blinds.
PS: I have no idea how or why the smiley face got put up there.