Hi. First time poster. Built the Picade today and attached my Rasp Pi 3 with Retropie installed. Pi works ok when plugged into normal screen, boots and works with SNES USB pad.
When I power it up in Picade theres a brief low crackle from the speakers and the screen flashes briefly white, not full screen white but sections top and bottom interference type of thing then solid blue screen comes on , off, on a bit longer and then on for a while before going off again.
I've tried uncommenting hdmi_force_unplug and setting to 1
and adding these two lines to bottom of config.txt
Light on the controller board (small one attached to side of cabinet under catch) is mostly orange occasionally green.