You’ve settled down to watch TV when you notice white star-like clusters on the screen. It’s not dust and it’s not a problem with the brightness. It’s the white dot syndrome caused by a worn out DMD chip.
Mitsubishi DLP TVs have been plagued with the problems for several years now. Various forums talk about customers being given quotes of $600 and upwards for solving the white spot syndrome or replacing the DMD DLP chip.
Fortunately, there are companies offering the offering the DLP chip for under $230.
Causes of white death
No matter what the brand, at the heart of any DLP TV the DMD chip invented in 1987 by Dr. Larry Hornbeck of Texas Instruments. This optical semiconductor contains an array of up to 2 million hinge-mounted microscopic mirrors, so small they measure one-fifth the width of a human hair.
As the chip receives the signal, small mirrors rotate, either tilting away or towards light to produce those stunning images that have made RPTV a favorite for viewing. Since they are mounted on a yoke with an axle that twists in the middle, these micro mirrors get stuck so they can no longer reflect the signal. The result is a white or black dot on the screen. As more and more mirrors become stuck, more white dots appear on screen creating an un-viewable image.
In order to address the issue, Texas Instrument has created a replacement DMD DLP chip that is affordable and readily available from recognized distributors. While part numbers may vary, the chip remains the same.
The following part numbers are interchangeable:
Avoid an expensive repair bill and let your service center know about the DMD DLP chip for under $230.