The orange/orange-white string (I think it's J121 pin 2 and 9 or something like that) isn't lighting up. Measuring voltage the yellow/white-yellow string has around 7-8v I think and the orange has like 1.5v. The fuse (F114 I think) is ok. What would cause low voltage? I can't see why the yellow string would have full voltage and the orange would not. Could it be the triac or transistor (I think those are the two other things on the circuit)?