Tap to Read ➤

DLP TV Problems

Rahul Thadani Oct 27, 2018
DLP TVs are direct competitors to the plasma TV market, but the complexity of the technology used in them end up causing a lot of problems as well. More and more people are beginning to realize that plasma TVs are a better option.
The DLP (Digital Light Processing) technology makes use of a small Digital Micromirror Device (DMD) inside the TV set. The DMD tilts around 1.5 million smaller micromirrors towards, or away from the light source inside the TV set.
The degree of this tilt is very minute, less than the width of a human hair to be precise, and this set of complex micromirrors increase the possibility of a consumer facing many unseen problems with their DLP TV set.

DLP TV Troubleshooting


There are a number of things that can go wrong with DLP TVs, resulting in a bad quality picture, or a malfunctioning TV set altogether. DLP TV bulbs are the source of the light inside the TV set, so if they go out, the TV is completely useless until this bulb is replaced.

Color wheel

The color wheel is another vital component of DLP TVs that can cause problems for consumers. This wheel spins at a very fast rate, almost 15,000 RPM, so there is a high possibility that you are facing issues due to a malfunctioning color wheel.
This will cause the TV to make a humming noise when it is switched on, and also bring out a rainbow effect on the screen. The only way to overcome this problem is to replace the color wheel.


Many viewers often complain about their DLP TV shutting off automatically. There is an auto-shutdown feature in these TVs that comes into play when the TV set has heated up excessively, or when the lamp door cover has not been shut properly.
To fix this problem, locate the lamp door cover, and ensure that it is shut, or alternately, give the TV set some time to get back to normal temperature.

Power supply

'DLP TV no picture' is a commonly faced problem by consumers, and this happens immediately after some green lines appear on the screen. A faulty power module can lead to this, but the large number of complaints of this nature have convinced users that the fault lies elsewhere.
Apart from the horizontal green lines, vertical black lines and white dots on the screen have also been noticed, and all these point towards some serious DLP TV problems that require the help of a professional technician.
DLP TVs are much larger and heavier than plasma TVs, and the difference in picture quality is minimal. With the wide range of issues of DLP TV sets that could plague you, it is certainly advisable to opt for a plasma TV instead.
Also these days, there are few DLP TVs produced, and the DLP technology is now used in large screen LED TVs instead. These are really catching on, and is the new big thing.