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Seems to me that there are a lot of us out here who have had the same problem with the PCB. Recently had a Potterton engineer out to service the boiler but he was rather tight lipped about how often he has had to change a PCB but did say that having done quite a few it did not take very long...

Gavin/Kiwi76 Yes, the spark electrode is connected to the old board, as is the earth lead. Realised I had a problem after fitting new board with all the leads provided, but no spark lead which is what you need to fire the boiler. On the replacement board I purchased, the board itself is hidden...

Hi Guys Have been watching this thread for a while and wanted to thank you for pointing me in the right direction. Mine is a 7 year old suprima 50 that started to lock out more and more frequently. Purchased a new pcb for £140+vat and have just fitted it. Only problem was that in the kit there...