Mainboard replacement does not boot/charge

[boarf]

Hello everyone,

I got this week the Pinephone mainboard replacement (this item) and tried to set it up this afternoon. But once installed, following the instructions in the video, nothing happens at all : it doesn't boot when I push the power button, and the status led doesn't go red when I plug the charger.

I thought I made a mistake during the installation, or that I broke something, so I put the ubports mainboard back in place to test the components: the phone booted and everything seemed fine.

I set the replacement mainboard up again: same issues, the phone doesn't boot or charge.

Any ideas?

Thanks!