There are several things involved with this so read through and try to grasp all thats being said:
1) For reference, TOC of wiring diagrams for your 2011 Sightseer 35J coach are located here: Table of Contents
2) The one of main interest is the Body, 110 Volt Wiring Diagram: http://www.winnebagoind.com/diagram/...ire_176724.pdf
3) As shown on the 110 VAC diagram, the circuits you are having a problem with are feed via the Xantrex Pro 1000 Watt Inverter. This inverter can either pass 110VAC shore power to the circuits or supply power to them ffrom the battery.
4) You said you are currently connected to 30 amp service. Those adaptors typically connect the 30 amp L1 lead to both L1 and L2 leads on the 50 amp plug. Reffering to the 110VAC diagram, that allows current to be feed through the ATS switch to both 50 AMP AC (Main) breakers in your coach AC distribution panel.
5)For 50 amp coach systems, loads are divided between the L1 and L2 shore power circuits by the way the AC circuit breakers are connected inside the AC Distribution panel. For your coach, the left hand 50 amp breaker (Red) feed the Recps 3 (Purple) breaker which feeds 120VAC to the inverter. The output of the inverter feeds the TV's and recepticles you are having a problem with.
Based on pdf page 50 the Xantrex Pro 1000W manual (http://www.xantrex.com/documents/Pow...C(artwork).pdf
) the inverter should pass 120VAC to the circuits if it is available whether it is ON or OFF.
There looks to be 2 paths for 110VAC from the Recps 3 (purple) AC breaker. If no voltage is at those recepticles then your back at the AC panel. Make sure the Recep 3 breaker is on and the left hand 50 amp breaker is ON. I am fairly sure the microwave and fridge (AC Mode) are also feed by that 50 amp breaker.
Hope this information helps.