MiSTer FPGA Forum

I reckon this is caused by an ESD protection device called U34 on the bottom of the PCB. There is a diode inside this device between CEC and the 5V rail, so when power is disconnected, the diode pulls the CEC line low and stops it working. I cut the connection to pin 1 (see attached picture) and my ARC issues went away. I don't think the ESD protec...