Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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Level 7

Roku SE "mode not supported"

Got the SE as a Christmas gift.  Worked for about an hour and then the screen went blank and displays "mode not supported".  Have tried all 4 HDMI ports on TV and 3 different cables.  Two of the cables work fine with our satellite receiver and our blue ray player.  No difference.  TV is a Samsung that is 7-10 years old.  The SKU# on the Roku box is 3090SE.

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