So long as they are genuine they can be repaired it sounds like the R8/R11 resistor has failed. If you do not want to do this yourself we can do it for £19.50 with 3 month warranty at www.siriushair.com
siriushair, February 2015
don't know why I bother,not one person I helped says thank you,so ladies,you put them into a shop to get them fixed pay lots of dosh and don't bother asking our advice again
gts, January 2015
just need a new cable fitted you can buy them on e bay very cheap