Hi,
when I was working with an older fella, we had a few jobs where the pcb was blown. He changed the pcb, switched boiler on and bang, it blew again straight away. On this particular job, he went through about 6 pcb's before he found the actual fault.........the lead going from the pcb to the gas valve.
So far I havent encountered a blown pcb but would like to prepare myself for when I do. Ive had a couple where the fuses have blown, replaced fuses and they have worked fine.
What I'd like to know is, before you guys replace pcb's, do you firstly consider that it could be the gas valve / pump / fan / leads that couldve blown the pcb? If so, how would you go about it so that you dont keep blowing pcb's before finding the actual fault?
Thanks
when I was working with an older fella, we had a few jobs where the pcb was blown. He changed the pcb, switched boiler on and bang, it blew again straight away. On this particular job, he went through about 6 pcb's before he found the actual fault.........the lead going from the pcb to the gas valve.
So far I havent encountered a blown pcb but would like to prepare myself for when I do. Ive had a couple where the fuses have blown, replaced fuses and they have worked fine.
What I'd like to know is, before you guys replace pcb's, do you firstly consider that it could be the gas valve / pump / fan / leads that couldve blown the pcb? If so, how would you go about it so that you dont keep blowing pcb's before finding the actual fault?
Thanks