A:AnswerTry the Power On feature, when enabled, your TV turns on displaying the last used input: go Home > Settings > Display & Sounds > Power On and select Last Input.
A:AnswerTry to go Home > Settings > Device & Software > About > Check for System Update. If you need personalized assistance with this issue, please visit insigniaproducts.com/email-us
A:AnswerThey have very similar features, the difference is the design. Also, the remote included with the model NS-50DF710NA21 has channel up/down buttons.
A:AnswerHi there!
The power indicator always shows red when the TV is turned off and not unplug from power outlet, it will only disappear once the TV is turned on.
Insignia Support
Angela