Hakko FX-888D toroidal transformer upgrade to 240V

[nickBcap]

Hi,
I was using a Singway 120-240V < > voltage convertor from Ebay but it was not good enough, it popped and the fuse in the Hakko blew also.
I have been looking at replacing the Hakko 110V transformer (I can trade the transformer if anyone needs it) with a toroidal transformer.
I have looked at projects and they seem to have been successful but also seem to have used single Voltage Out toroidal transformers. But, the only toroidal transformers I found all have dual 12V or dual 24V Voltage Out.
It seems I should have to use a single Voltage Out toroidal transformer and not a Dual Voltage Out toroidal transformer.
May I have some advice please.