I have a 14 yr old gloworm24 cxi combi boiler. The pcb blew the other day so I ordered a refurb from eBay for £40. Swapped them over and all was working until this board blew. The quick blow fuse hasn’t operated as that’s still intact but there’s a new scorch mark on the boiler next to the pcb that wasn’t there before so I assume it’s gone again. Have I just been unlucky and therefore should just but a brand new board or shall I just bite the bullet and get a new boiler which I had planned to do in 18 months or so.