I have found this LVDS to HDMI converter on eBay:
http://www.ebay.com/itm/371824836199?_t ... EBIDX%3AIT
My panel (from the iMac) is a LM201WE3-TLF5 (LG-Phillips)
The converter works with a panel of similar resolution -> LM201W01(SL)(C1)
Any thoughts?