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HDMI picture drops when a stream changes format

Check whether the picture returns after the format change. A momentary blank during HDMI renegotiation differs from a permanent loss of signal. Use a known stable output and keep the player open while you test the chain.

A viewer with a remote control in a living room
Andres Ayrton · Pexels License

Test the shortest signal path

  • Use a display input documented to support the output mode in question.
  • Temporarily connect the streaming box directly to the display if it normally goes through a receiver or soundbar.
  • Play the same known clip. Add the receiver back only after the direct setup works.
  • If there is still no picture, use a supported lower output mode and reintroduce one feature at a time.

Keep the source and output separate

The HDR or refresh indicator on the television reports the signal received from the box. Document the source mode where the app exposes it. A mismatch gives you a more useful lead than repeatedly changing cables without keeping a record.