Hi this boiler has given me many challenges before, but this time I am beaten. Its actually in my ex wifes house, but I still feel responsible for it. Last week her mains RCD tripped. Upon resetting it, she discovered that the boiler was not working and asked me to come and have a look. I tried to reset using reset switch under boiler (hold for 20 seconds as I remember). Nothing happened, no warning lights flashed. I then found the 2 amp 240 volt glass fuse was blown on the back of the PCB. I replaced it, it blew immediately on power up. I checked for water lying in the base of boiler that may have caused a short. After this I replaced the fuse again and this time the transformer hummed as usual, but it would not reset or ignite. I then found two blown resistors on the PCB which I replaced with ones from Maplin. Still no joy. Finally I bought a new PCB and fitted it today, still no warning lights, nothing. All I can think now is that the transformer has failed. But at £60 for a new one, Im not sure what to do. Throwing money at this rotten old boiler does not seem right, but right now my ex does not have money for a replacement. I would be very grateful for any pointers or from anyone that has had these symptoms. Thanks for listening, Charlie.