So, you are not happy withe first guy, as the 2nd guy gave you a different answer? Now it seems that the 2nd guy was wrong (as we all predicted), so why have you faith in his ID of a PCB fault? Am I right in assuming that your 1st post was correct, and that you have the correct voltage at the valve? If so, and it is accross the L&E, then it is clearly the valve. Be aware that merchants don't take back (particularly) electronic components.
i have not paid for any thing i think the guy who came around didnt have a clue hence he never came back