Hey i don't know if you are aware and depending on the time you bought them but GHD hair straighteners were a feature on watchdog because they were faulty and some of them were causing fires! Loads of people wrote into complain about them...they have since then put in a safety feature. But it depends if yours are part of the new lot or part of the old lot.
In which case you may be able to get them fixed via the company that make them due to the safety concerns. You might be able to get the address info from watchdog online.. i think the program was either last year or the year before that it featured the safety alert.
MC MASSIVE
May 2007