sorry to blow your assumption out of the water, but it actually took a lot of hard work, time and experience getting where i am at the moment regarding technical/gas skills. as for helping people on this site, there is only so far you can go with advising, as certain fixes for boilers need a qualified trained gas engineer who knows how to, cause i wouldn't want to be the guy that gives advise to someone wanting to fit safety critical/gas parts and in doing so they leave a gas/ c.o. leak/electricute themselves or so on, so "FORGIVE ME" for doing my job as a responsible gas engineer!!!!!! also you go on about knowledge and being taught, if you are gas safe registered then manufacturers offer technical courses regularly so suggest this maybe the avenue to go downWell I'm sorry but you have caused offence ! I thought these forums were help imPart knowledge to others not to slate them for not knowing . I'm sorry I obviously wasn't born with the immense amount of information about fault finding the YOU obviously were ! You only learn by being taught . I asked merely because I had fault found that there was an issue with the pcb but now a new issue has arisen and I don't know what's causing it. So my sincerest apologies to anyone I have caused offence to by asking a question and I shall only return when I know everything there is to know about everything . !!!!