OK now this is embarassing but I didnt chk the model number correctly before posting the link(was too excited I guess)... The model number of the HD66 DMD chip is most probably 1280-6039B & not 1076-6039B as I posted... Here is the link to the 1280-6039B
DMD chip 1280-6038B 1280-6039B for Benq, NEC, Sharp, Mitsubishi Casio Projector | eBay
Now there are a couple of problems with this... 1st of all the seller has confirmed that this chip is confirmed used in the Optoma GT720... Wht he does not confirm is that it can be used in the HD66... You could always ask him if he has had any customer use this chip in a HD66... Anyway the best way to find out which is the correct chip is to open up ur projector & see which DMD chip is inside...
2nd Prob is that this seller has updated his listing of this chip saying that his source has stopped supplying him this chip... This is sad news as every other seller is selling this chip for more than double this guy... & he seems to only have 3 chips left... So my suggestion is this... Either open up the HD66 urself or take it to rajudhs in bangalore as soon as posible & chk the model number of the DMD chip... Post the number here & if it is the same chip as this guy is selling then order it asap... then when the DMD chip arrives rajudhs can help u install it... Hell u guys could also make a video of this dismatling the HD66 & installing the chip to make sure noone else in the future on this forum is fooled by optoma service center ppl into over paying for stuff & most ppl will be able to do it themselves...
This listing is the only listing that shows up when u search "HD66 dmd" on ebay... The reason I did not post this was the whole point of this research was to find a much cheaper alternative to the optoma service ppl here in India... If you look hard enough you might be able to find a optoma service center which would be willing to change the dmd chip for u for 13-15k... Then y would u buy a dmd chip from ebay for 10-11k , have it shipped to india & try installing it urself... In the solution I am suggesting it might be worth taking a risk after confirming that HD66 indeed has this particular DMD chip in it ... Coz the total risk would be in tune of 3-4k not more... totally worth it if you ask me...