Quoted from trinity9:The only thing I'm missing at this point is the ability to push "down" while in service mode. The down button won't register. I imagine I will have to have them send me a new button assembly.
Please check J602 pin 8 on the I/O board. Yellow wire/blue stripe. Be sure it is plugged in. If so then check continuity from the down button on that wire to the same color wire in J602. You might have a break along the way. Whether you can see it or not.
LTG : )