| More RE8500 info,
During the preheat stage the upper heater is suppling little heat so you do not want to match the temps during this phase. It is only during the last phase you want them to match and I think the control does that automatically. Just keep the upper heater at position 3 and you should be good to go. I have installed an extra collet on the upper heater shaft that allows me to keep the postion where I want it when I drop the heater down.
One more point, all my testing is on laptop motherboards, other type boards would be entirely different settings and positions. |