Solving playback issues

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

Unsupported signal error message on Ultra unit

I keep getting this error message and a black screen periodically while watching.  Reboots sometimes help but ultimately always crashes to this screen.

Set video down to 720 HD but still keeps happening.

Sony Bravia, older model.

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