In article , MODERN LASS
wrote:

Hi! My upstairs bathroom sink hot water tap has stopped working with no
water at all flowing. I don't think that its the water pressure as the
other 3 taps in the bathroom are fine ...any ideas?

Does the tap handle still turn through the full amount? I've come across
a couple of cases where the combination of a worn washer and excessive
force when turning the tap off has forced the central spindle beyond the
end of it's guide. The spindle had then rotated slightly and, being
hexagonal, wouldn't go back up inside the matching guide. There was
still enough flexibility and free play in the screw thread for the
handle to turn through about one turn before things jammed up but not
enough to lift the washer off the seat.

The cure was to remove the tap from it's base and then keep turning the
tap handle clockwise beyond the normal off state to detach the washer
and it's carrier completely then carefully align it's hexagon with the
hole and screw it back in by turning the tap knob clockwise while firmly
holding the washer carrier to stop it rotating. Best to fit a new washer
while you're at it too.

--
Mike Clarke