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Please find the attached image of power supply board where Va and Vs volts pins are marked with yellow arrows, check these volts with voltmeter that would be around 200V DC and 60V DC
Are these volts available on power board, even for few seconds?
I'm sorry about above info that were meant to different TV question.
Let me repost this question for experts.
Hello, my name is Rusty. When you turn the dish box on, does the TV do anything different? What is the model number of your second room remote?
Ok, sounds good. They definitely need to activate a second line, and the triplexer needs to be connected properly. Dish is a pretty complicated wiring job, compared to cable. Let me know if they don't get it sorted.