I got the new inverter board to light up the lamps today, turns out the main board wasn't putting out enough voltage to cause it to come on. The inverter wants to see around 1 vdc as its turn on logic signal, the main board was only putting out .78 vdc so it wasn't coming on. I put my meter on that same pin set to diode test mode (which outputs a few volts), and it lit right up. I ordered a new main board, cost was $20. Hopefully that will be the end of this troubleshooting session.