Simplest thing first check the bulbs with an ohm meter or in another socket. If the bulbs are good replace them in the fixture and proceed.
It is unlikely that it is a fuse since only the one room is effected. However check the fuses first to be sure. If the fuses are all good remove the switch from the wall and and check for voltage to ground on both sides of the switch. With the switch off you should only see voltage on one side. With it on you should see voltage on both sides.
If you do not have voltage on both sides when the switch is on the switch is bad.
Assuming you have voltage on both sides of the switch remove the fixture and test for voltage on the incoming wire. If there is no voltage while the switch is on the wire in the wall is open. If you have voltage at the fixture input wire check the ground connection of the fixture, loose screw, broken wire.
If the ground connection is good and still no lights check the wiring in and around the fixture for loose connection or broken wire.
If you have voltage to the fixture and a known good ground and still no lights the fixture is bad.
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WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles
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