GT2560 extension board melted ?

[FabianAllen]

Hi I purchased a Geeetech prusa I3 A Pro 3D printer DIY kit back in November got it all set up and have done about 20-30 prints with 7 of these being 7-8 hours long.

On my last print there was a horrible smell around the house and it appears my GT2560 extension board has melted where the heat bed connection was.
I immediately turned of the printer.

Do you know where i can get a replacement board from? the eBay seller is being less that helpful currently, i believe to being because they have already had to replace all Z rods due to being bent, the aluminium heat bed as it wasn't flat and the extruder element as this had failed.