Home Assistant Yellow with Raspberry Pi CM4 Not Responding | Home Assistant | Page 1

agile ingot Jan 29, 2025, 5:06 PM

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Hello everyone, my Home Assistant Yellow with a Raspberry Pi Compute Module 4 and Power over Ethernet is not showing any signs of life. I have already tried using a 12V power supply and reinstalled the Compute Module, but the device won’t turn on, and no LEDs are lighting up. I also checked the network connection via LAN cable. Could this be an issue with PoE power supply or the board itself? Any ideas?

quick heart Jan 29, 2025, 5:15 PM

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No LEDs is usually a sign of a not correctly seated Compute Module, a wrong power supply or a hardware failure.

agile ingot Jan 29, 2025, 6:40 PM

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What can I possibly do?

quick heart Jan 29, 2025, 6:46 PM

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Check if the CM is fully inserted in its sockets and if the power supply matches the required specs.

agile ingot Jan 29, 2025, 7:14 PM

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Checked that 3 times. Power supply is my LAN Cable. Idk 🥲

quick heart Jan 29, 2025, 7:17 PM

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Is it a Yellow with PoE and are you using the proper PoE+ IEEE 802.3at-2009 Class 3 or 4 standard?

agile ingot Jan 29, 2025, 7:40 PM

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Where can I check that? I am a complete beginner

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But I tried an 12V Cable.. still nothing

quick heart Jan 29, 2025, 7:44 PM

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You used a 12V power supply with a center positive 5.5/2.1 mm barrel connector?

#Home Assistant Yellow with Raspberry Pi CM4 Not Responding