Hot water temperature drop Opal Triton Shower?

I have the same problem with mine. If I have it on the low power setting, the water is stone cold, on the hi power setting I have to have it right up to get a decent temperature. I have just replaced the heater can today, but it's still the same! Do you think it's worth spending out on a new PCB as I've already splashed-out £65 for the can? Many thanks

Sherz
July 2009