The GHD Platinum S8T261 & S8T262 are the current flagship models and have been available for a few years now.
The design and technology used in this model has meant that there were no spares available and that a repair is not possible, not even by us.
The exception is the mains cable.
The mains cable and socket on this model is very reliable so only change the mains cable if it is physically cut or damaged in some way that would stop power getting to the irons.
If it is intact do not change it hoping to cure a fault.