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DLP TV Troubleshooting

Do you need to repair an older TV? What is causing the picture to disappear? DLP televisions constitute various components which tend to go bad over a period of time, based on condition and usage. Sudden problems on an otherwise well-functioning television can be frustrating. In such scenarios, it is a relief to know Experts are on-hand to assist ith troubleshooting and repairs. Read below for a few questions answered by verified Experts regarding troubleshooting and repairs. 

What is a DLP TV?

A Digital Light Processing TV (DLP) is similar to a multimedia projector and is equipped with a backlight source, usually a lamp that displays fluorescent light. This TV is fitted with a DLP chip mounted on a light engine (LE). With the help of the LE it generates an image that gets projected on the TVs front screen. This is possible through several mirrors contained in the chip that swivel in sync with the signal applied. This causes them to stick together and reflect light as white or black spots (depending on how they stick). Brands such as Samsung, Mitsubishi, Toshiba and Sony manufacture these DLP TVs.

Why has the picture darkened despite a new lamp on a JVC DLP TV?

This is likely a fault with the optics contained in the light engine as this component is responsible to process the image that the lamp displays. This lamp has a limited lifespan or working hours and a failing lamp leads to an overall dark image. However, it does not affect the color, hue or corners of the screen. To repair this issue, the light engine and Optical Block needs to be replaced.

What does it mean if no picture is displayed on a Samsung DLP and the front indicator lights blink steadily?

Case Details: The set works for a few minutes when turned on and then the picture goes off.

If three LED lights blink steadily along with no picture, the problem is most likely a failed lamp. If a pop is heard, it means the lamp has blown. These are signs that the lamp should be replaced. It is wise to use OEM Philips lamps rather than cheaper aftermarket counterparts since they can do more harm than good.

Why are ‘stars’ and 'holes’ being displayed on a Mitsubishi DLP TV?

Case Details: The TV is 7 years old and the bulb was recently replaced.

This is a common problem on DLP TV sets. Essentially, these TVs use a “DLP” chip to produce the picture. This chip contains numerous tiny mirrors. When these mirrors start to fail, spots appear on the TV screen. If the DLP chip is not replaced, the problem can worsen. In the meantime, there are no settings which can be adjusted to fix this issue. Mitsubishi has acknowledged this problem with its DLP chip and is willing to cover the cost of the part. 

What can cause a 10 year old Samsung DLP TV to make a loud whirring noise?

The DLP set comes equipped with a color wheel and when the bearings on this wheel become bad, the TV tends to make abnormal sounds. It is not uncommon for DLP sets to face such issues from time to time. This is more so the case with a 10 year old set. Apart from this, the ballast can be the culprit too. It can start buzzing and cause a fuzzy picture because of bad capacitors on the board or a bad power supply PCB.

What can prevent a DLP TV from turning on and the light to blink 9-10 times? 

This could be bad capacitors on several boards inside the chassis. 

As seen above, DLP televisions may be an older technology but are still popularly used. Troubleshooting their problems throws light on the need to replace faulty parts. This can prove to be expensive. In such situations, it is a choice of cutting your losses. Either you can invest the same money into a new TV or spend it on parts and labor needed to repair these older sets. Therefore ask Experts about your particular DLP problems and know more about your options from the comfort of your home, in a quick and affordable manner. 

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