On my 17 DSDP there is a 29 amp fuse in the half bath on the 12 VDC panel. It is labeled KIB Aux I believe. Pull it out, wait a few seconds and reinsert.
If that is no joy then the panel above the bed can be removed by prying it down. The connector to the switch panel can be removed and reconnected. These panel are each programmed for the location itís installed. If you need to order one make sure you get the part number from the board and have a picture ready to send to the Newmar parts counter guy.
John and Lynn, Fulltimers
2017 Newmar Dutch Star 4018
2011 Jeep Grand Cherokee toad