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Apple TV 4k won't turn on. No blinking light. No signal to TV.

Device won't react when connected to power. No blinking light and no signal to TV. Remote does nothing. No warranty left.

Tried:

-Disconnect device from power for a while and reconnect

-Change power cable

-Change power outlet

Thankful for help

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Hi @mikefors

Did you try replacing the batteries in the remote, you never said?

8 de jan de 2026 por jayeff

Nothing wrong with the remote. Tried it on another device.

8 de jan de 2026 por Mike Fors

8 de jan de 2026 por jayeff

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Postado: 8 de jan de 2026

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Hi!

I would suggest to check the power board first.

Guide: Apple TV 4K 2021 Teardown (step 10).

See if you can find any damage or whatsoever. Also, check the logic board. Replacing the power board would be a good test. If it's still failing after this, it's most likely the logic board that is broken..

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Hi @mikefors,

To add to this there's a T3.15A 250V axial type fuse on the back of the power board that might be worth checking to see if it's OK or not.

8 de jan de 2026 por jayeff

Thanks for pointing that out @jayeff !

8 de jan de 2026 por koppie007

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Apple TV 4K (2021)

Apple TV 4k won't turn on. No blinking light. No signal to TV.

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