The EMEA support HQ is in the UK; and it most likely will not be be economic to you, for BMD to repair, even if they would, unlikely again, in any case.
But the HDMI issue is fairly common on the Pockets and is usually a blown chip. Any reasonably competent electronics/camera repair place, should be able to fix it for not too much:
(4K and 6K are identical in this regard)
For the dead pixels, have you run the pixel calibration, in settings?