I feel your pain,
I have a 2014 Thor Mtr Coach 27F. It is factory equipped with a Jenson JRV212T. Went blank screen. Unplugged shore power and pulled battery grounds off coach and under hood. Re-connected, radio and cameras worked great again for 10 minutes and pooped out again. Jenson and Junk both start with a J....Genman in Waco,TX
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