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UniFi network Lite 8 PoE switch - will not power up

I have a UniFi Lite 8 port network switch that will not power up.

The remote power supply is OK with 54 volts DC on the output supply lead.

Thanks for any help.

Leon

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Hi @leonbaggot78529,

You may have to open it up and check for any obvious damage on the motherboard.

Post some close up images, especially showing the area around where the power input connects on the board, back here in your question.

Here's how on ifixit 在已经存在的问题里加入图片

Here's a video that will help with the disassembly.

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