I am in dire need of direction from a kind person...over and over my R19 resistor blows on PPB1 on my Lethal Weapon 3...through plugging in connectors one by one I have tracked it to it happening as soon as I plug in connector J4 on PPB1...I just do not know what to do next...I tested the bridge rectifier and it is my belief that it tests ok...I have had all boards serviced by a pro so I just need to know what my next move is...please speak to me as if I am stupid...assume I know nothing but be assured that I do have some ability...thanks for any help you can give