This info is for unfortunate folks like me whose DMD chip has gone bust. A DMD chip going bad is the worst thing that can happen to your projector so please note the following with care-
DMD chip name- DMD Chip 1910-6039E
Optoma has very poor service in India, so if they can't repair it, one needs to source the chip from abroad and get it repaired in any projector repair facility. The cost will be high 10000-15000.