I have a natural gas utica boiler that will not come on. When heat is called for the power venter kicks on but no spark not even the clicking sound. I was having trouble with the unit a few weeks ago and had a service guy come look at it. He told me it was the gas valve. Well he was wrong finding out after I replaced it. Ended up a little moisture in the intermittent pilot ignition control box. I blew it out and it fired right up. Two weeks later and nothing even happens. Not sure if I fried the circuit board? Would have thought it wouldn't have worked at all in the first place if that was the case. Any suggestions before I go buy a new $200 circuit board? Thanks a bunch supposed to be really chilly this weekend.