well, if your good enough, then yes, i know theyre available
make sure the plugs out… theres more than one relay on the board, u just have to follow the heater connections back to the faulty one, remove it and take it to maplins.. theyre usually pretty good for things like that
the only reason you’d need an eprom is because the original one is different to the service pcb, and isnt interchangeable, so ull need a new one, unless of course uve had the board replaced previously…..
hope this helps