MacBook 12 A1534 2016 won’t turn on

Hello,

yesterday I repaired my MacBook screen. I forgot to hit the small yellow button on the motherboard before disconnecting the trackpad cable. At this moment the MacBook won’t turn on or give any sign of live. When I disconnect the battery and connect the MacBook to the charger and hit control + option + shift and power button (SMC reset) the white led on the motherboard turns off after 5 sec. When I put the charger back in the MacBook the white light starts to shine again. The charger that works good makes a little noise when the Macbook is plugged in.

Specifications:

A1534

macbook 12 gold

2016

Does anybody have a solution to fix this MacBook or does anybody have the same problem ?

Thank you

greetings Elroy