Its from a projector PSU and i think its an isolation transformer (its marked with a T on the pcb) but in not 100% certain.
Dimensions are 26mm x 25mm x 20mm and has 8 pins.

 

Is it from a Toshiba?

 

Yeh. Toshiba TDP-MT200 although i believe the PSU's are made by a third party company. The model number on the board is QP-4276 Rev 10
Its annoying the projector is renderd useless all becuase of one (albeit very important) failed component

 

I googled the part and came up with this site. Unfortunately it's out of stock but you can at least call them and see if they can order it for you.
http://www.plasmafix.com/forsale/index.php?act=viewCat&catId=34