We had the same problem about 2 weeks ago....you had to switch something in the inputs - it was the 2nd one down, but it wouldn't let you select it so you just had to push 1 and it would switch. I unfortunately don't remember the setting, just that it was the 2nd one that came up on the TV (which is a Toshiba)
2015 Georgetown 351DS
2016 Jeep Wrangler Unlimited Sahara
Chris, Garren (humans)
Edgar & Carlos (felines)
RIP Sophie, the sweetest cat ever.