Quoted from PittPin:I measured J120-11 pin to ground and got 7.2 v
As Lloyd suggests you need to check AC voltage back to the transformer and not ground. So remove J120 and measure on the board header pins 11 and 6. Then remove J119 and measure pins 3 and 1. If you are getting voltage on one set but not the other then you may have cracked header pins or a burnt trace on the back of the board. If you don't get voltage on either set then you need to check the triac or a burnt trace on the back of the board.