No Power after install new emmc and front touchscreen

[lot378]

I suspect the battery contains no charge - charging the battery is difficult if the phone does not boot. Do you have the Pine64 standalone battery charger for the PinePhone? I suggest using this or some other means to charge the battery outside of the PinePhone and then try booting the phone again.

See: https://pine64.com/product/pinephone-battery-charger/

If still does not boot then will need to check all the connections, checking the connectors for damage.