Caravan power window not working

Hi, I have 1999 Dodge Caravan SE 3.3L
From a few months ago, the right side power window is not working
intermittently. few hours or a day.
When it does not work, both left (at driver's door) and right door's window
switch are not working.
Other equipments include radio, lights, horn, air conditioner, back seat's
power windows, left power window
are all right.

I checked fuses under driver's seat and the hood, every fuses looks fine
when I pulled and see.

Is there any points to check them out? TSB?
Do I need to uncover the right door panel to see inside of cable?
Any advises I appreciate. Thanks for reading.