The trigger power button is one of the most common problems with the Dyson V10 and V11. In this video, I will show You how You can replace it.
I recommend this kit that contains the button (reinforced version) and the two screwdrivers needed to disassemble the vacuum cleaner.
https://www.amazon.com/dp/B0CR72Q33Z?maas=maas_adg_300BA08A1FF3D1BD9A9276E478B6C690_afap_abs&ref=techfixpov&ref_=aa_maas&tag=maas