Mac mini M1 powers on but gives no video signal

Symptoms that help pinpoint the fault

The more precise the description, the fewer unnecessary tests will be required:

Checks you can perform without opening the unit

Try a direct cable and avoid chains of adapters.

Stop testing if there is any smell, localised heat, liquid or intermittent connections. Continuing may enlarge a localised fault.

Data depends on the original logic board

On Apple Silicon, storage is integrated and encrypted. Replacing the logic board does not automatically transfer documents, photos or projects. When no backup exists, the strategy should prioritise the original logic board and avoid actions that would erase the content.

Before restoring firmware, reinstalling or accepting a replacement, consult the Mac data recovery service.