Hello I have assembled and am testing my first mbhp burner module. Everything went fine until testing the vdd pin voltages. The yellow light flashes on and off when I toggle vdd in the p18_18 software but there is no voltage change in the pins. I have noticed that the when testing the vdd pin on the ceramic capacitor line with the vss pin on the opposite side of the socket there is an exact change from 5 to 0 volts. Please can someone advise me what I am doing wrong. Many thanks.