Новодел Compact 256 turbo

[Shockwav3]

I just finished assembling my Compact 256 Turbo 1.1 PCB and the machine seems to work completely, only issue is that the video output is way too dark. Any ideas what might cause that? Resistors in the video circuit have been placed as note on the silkscreen (maybe replacing the 300Ohm ones with 27Ohm as in the Compact 128 schematic might fix it?), transistors are KT315B


EDIT: Never mind ... found the problem ... soldered the 100Ohm resistor near KP13 (as represented by the silkscreen) instead of a jumper