Marantz Cinema 50 Troubleshooting

If your Cinema 50 is having issues (audio/video, or settings menu not staying up etc.) and a factory reset hasn't solved the problem, the last thing to try is restoring the firmware to the factory defaults.

If this still fails, then there is a clear issue with the boards and will need an assessment. 

To complete a firmware factory restore see the instructions below.

Note: The unit needs to be fully off before pressing the buttons. Also, some units may have an "Info" button instead of the tuner preset CH +.

Posted: Monday 14 July 2025


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