Shower Mixer Problem?

When I turn the shower on (its a single handle and goes from cold to hot), however I do not get any hot, and when I get to a certain spot while I am turning it the pressure drops a bit. Please tell me I can fix this without having to pull the entire shower out.

Thanks for your help
Harvey, March 2005


done
depending on type of shower first check to see if filters are blocked on inlets (if it has filters) scale builds up, if not hot side may be scaled and will need to buy new cartridge at cost of 60 to 80 quid

kevin, March 2005