Finally got this 35 board to boot on the bench with a pc power supply giving 5v and 12v. Boots every time. Put it in my future spa project and sometimes it boots, sometimes not. Repinned connectors from solenoid to mpu. Added a ground wire just in case it was the issue. I read some forums that talked about write speed on u2 and u6 so the ones in there are at zero speed on a GQ burner. Monitored the power and no fluctuations. Anyone see this before or know what might cause it? Did a video below…