All electrics were off this morning! something in kitchen had tripped & everything went off! After a process of illimination it is the box fitted to the wall (which you switch ch/hw on/off etc) it is a bit loose so cld a wire have come out/loose? or is it the boiler itself that/s gone?? Do I call a plumber OR Electrician?? If it isn't a wire
you said you'd traced the problem down to the box on the wall so why would you be asking if its the boiler??? if its the programmer then either/or should be able to tell you
generally something that trips the power is a working part eg fan, pump.
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