How the Mitsubishi DMD DLP chip works

Samsung HLT5656WX/XAA TV white dots solution

White dots on your Samsung HLT5656WX/XAA TV screen  can be eliminated by replacing the 4719-001997 DLP chip. Follow the step by step guide below to replace this chip.

Note: These instructions can also be used for the following Samsung models:  

50A650C1FXZA, HLT5055WX/XAA , HLT5076SX/XAA, HLT5087SX/XAA, HLS5087WX/XAA, HL56A650C1FXZA, HLT5656WX/XAA, HLT5676SX/XAA, HLT5687SX/XAA, HLT5687SAX/XAA, HLT5689SX/XAA, HLT6156WX/XAA, HL61A650C1FXZA, HL61A750A1FXZA, HLT6156WX/XAA, HLT6176SX/XAA, HLT6187SAX/XAA, HLT6187SX/XAA, HLS6187WX/XAA, HLT6189SX/XAA, HL67A750A1FXZA, HLT6756WX/XAA, HL72A650C1FXZA, HLT7288WX/XAA

Find this New Mitsubishi/Toshiba 4719-001997 DLP Chip 1910-6143W on Amazon.

Equipment needed

• • Electric Philips screwdriver
  • needle nose pliers or a 5mm nut driver
  • antistatic gloves OR plastic gloves used with an antistatic wrist band
  • soft cloth or brush

Replacing the 4719-001997 DLP Chip in the HLT5656WX/XAA

Step 1

Step 1: Put on the plastic gloves. Loosen all the screws found on the back panel of the Samsung HLT5656WX/XAA. Put the screws to one side and remove the back panel.

Step 2

Step 2: Loosen the two screws holding the lamp bracket in place.

Step 3

Step 3: Remove the 4 screws holding the lamp engine in place. Disconnect all the connectors. Important: don’t yank any cables.

Step 4

Step 4: Carefully remove light engine from the cabinet.

Step 5

Step 5: Remove the 2 screws holding the color wheel protective cover in it place. Avoid touching any of the optical components as this can affect the quality of your picture.

Step 6

Step 6: Carefully disconnect the cables between the terminal board and lamp.

Step 7

Step 7: Disconnect the clip connecting the cooling unit.

Step 8

Step 8: Remove the cooling unit and terminal board.

Step 9

Step 9: Remove the terminal board.

Step 10

Step 10: Loosen the 7 screws holding the terminal cover in place. (Good time to dust this section).

Step 11

Step 11: Carefully pop the terminal out of its holder.

Step 12

Step 12: Unlock the old DLP Chip from the terminal. You may need to use a flat edged screwdriver to pop it out.

Step 13

Step 13: Place the new DLP chip into place. Handle the DLP CHIP only by the edges because it is very sensitive to static electricity.

Step 14

Step 14: Put the terminal back into its holder.

Step 15

Step 15: Tighten the 7 screws holding the terminal in place.

Step 16

Step 16: Replace the terminal board’s cover.

Step 17

Step 17: Reconnect the clip holding the cooling unit.

Step 18

Step 18: Re-connect the cables between the terminal board and lamp.

Step 19

Step 19: Tighten the 2 screws holding the color wheel protective cover in it place. Avoid touching any of the optical components as this can affect the quality of your picture.

Step 20

Step 20: Carefully replace the light engine back into the cabinet.

Step 21

Step 21: Replace and tighten the 4 screws holding the lamp engine in place. Re-connect all the connectors.

Step 22

Step 22: Put the light engine back into the RPTV. Tighten both screws that keep the back bracket in place.

.

Step 23

Step 23: Put the back panel back onto the TV. Put the screws back into place and tighten them. Enjoy the crisp, clear picture on your Samsung HLT6756WX RPTV.

Learn more about your Samsung HLT5656WX/XAA RPTV:

• 7 Tips for extending RPTV lamp life
• RPTV Troubleshooting: TV won’t turn on
• Consumer Alert: The dangers of RPTV generic lamps

The post End white dots on the Samsung HLT5656WX/XAA TV appeared first on DLP Lamp Guide - LCD and DLP Repair Tips - Fix Your DLP - FixYourDLP.com.

Solving white dots problem on Samsung HLS6187WX/XAA TV

The white dot problem on your Samsung HLS6187WX/XAA  TV screen  can be eliminated by replacing the 4719-001997 DLP chip. Follow the step by step guide below to replace this chip.

Note: These instructions can also be used for the following Samsung models: 

50A650C1FXZA, HLT5055WX/XAA , HLT5076SX/XAA, HLT5087SX/XAA, HLS5087WX/XAA, HL56A650C1FXZA, HLT5656WX/XAA, HLT5676SX/XAA, HLT5687SX/XAA, HLT5687SAX/XAA, HLT5689SX/XAA, HLT6156WX/XAA, HL61A650C1FXZA, HL61A750A1FXZA, HLT6156WX/XAA, HLT6176SX/XAA, HLT6187SAX/XAA, HLT6187SX/XAA, HLS6187WX/XAA, HLT6189SX/XAA, HL67A750A1FXZA, HLT6756WX/XAA, HL72A650C1FXZA, HLT7288WX/XAA

Find this New Mitsubishi/Toshiba 4719-001997 DLP Chip 1910-6143W on Amazon.

Equipment needed

• • Electric Philips screwdriver
  • needle nose pliers or a 5mm nut driver
  • antistatic gloves OR plastic gloves used with an antistatic wrist band
  • soft cloth or brush

Replacing the 4719-001997 DLP Chip in the HLS6187WX/XAA

Step 1

Step 1: Put on the plastic gloves. Loosen all the screws found on the back panel of the Samsung HLS6187WX/XAA.  Put the screws to one side and remove the back panel.

Step 2

Step 2: Loosen the two screws holding the lamp bracket in place.

Step 3

Step 3: Remove the 4 screws holding the lamp engine in place. Disconnect all the connectors. Important: don’t yank any cables.

Step 4

Step 4: Carefully remove light engine from the cabinet.

Step 5

Step 5: Remove the 2 screws holding the color wheel protective cover in it place. Avoid touching any of the optical components as this can affect the quality of your picture.

Step 6

Step 6: Carefully disconnect the cables between the terminal board and lamp.

Step 7

Step 7: Disconnect the clip connecting the cooling unit.

Step 8

Step 8: Remove the cooling unit and terminal board.

Step 9

Step 9: Remove the terminal board.

Step 10

Step 10: Loosen the 7 screws holding the terminal cover in place. (Good time to dust this section).

Step 11

Step 11: Carefully pop the terminal out of its holder.

Step 12

Step 12: Unlock the old DLP Chip from the terminal. You may need to use a flat edged screwdriver to pop it out.

Step 13

Step 13: Place the new DLP chip into place. Handle the DLP CHIP only by the edges because it is very sensitive to static electricity.

Step 14

Step 14: Put the terminal back into its holder.

Step 15

Step 15: Tighten the 7 screws holding the terminal in place.

Step 16

Step 16: Replace the terminal board’s cover.

Step 17

Step 17: Reconnect the clip holding the cooling unit.

Step 18

Step 18: Re-connect the cables between the terminal board and lamp.

Step 19

Step 19: Tighten the 2 screws holding the color wheel protective cover in it place. Avoid touching any of the optical components as this can affect the quality of your picture.

Step 20

Step 20: Carefully replace the light engine back into the cabinet.

Step 21

Step 21: Replace and tighten the 4 screws holding the lamp engine in place. Re-connect all the connectors.

Step 22

Step 22: Put the light engine back into the RPTV. Tighten both screws that keep the back bracket in place.

Step 23

Step 23: Put the back panel back onto the TV. Put the screws back into place and tighten.  Enjoy the crisp, clear picture on your Samsung HLS6187WX/XAA RPTV.

Learn more about your Samsung HLS6187WX/XAA RPTV:

• 7 Tips for extending RPTV lamp life
• RPTV Troubleshooting: TV won’t turn on
• Consumer Alert: The dangers of RPTV generic lamps

The post Fix the Samsung HLS6187WX/XAA white dot problem appeared first on DLP Lamp Guide - LCD and DLP Repair Tips - Fix Your DLP - FixYourDLP.com.

Solving the DLP TV white dot problem

White dots, white snow or sparkling stars on your DLP TV mean only one thing – a worn out DMD chip. The DLP TV white dot problem seems to happen after two to five years – usually when the warranty has expired

Certain brands seem more vulnerable than others to the white dot syndrome. Samsung and Mitsubishi DLP TVs have been plagued with the problems for several years now. Sony and JVC choose to take the TVs set off the market in response to complaints from disgruntled owners.

If you read the various forums offering solutions, you’ll see 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 $300.

Find this New Mitsubishi/Toshiba 4719-001997 DLP Chip 1910-6143W on Amazon.

DMD DLP chip

Causes of DLP white dot syndrome

At the heart of every DLP TV, no matter what the brand is 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.

The DMD chip receives the digital or graphic signal reflecting it onto the TV screen to produce the stunning images that have made these TVs a frontrunner for the consumer.  The mirrors themselves are made out of aluminum and mounted on a yoke with an axle that literally twists in the middle. The DMD micro mirrors switch on and off, either tilt towards the light or away from it.

This action creates the light or dark pixels on the screen and allows for a staggering 1,204 shades of gray.  At the same time, the DLP lamp generates white light that passes through a red, green, and blue color filter to the surface of the DMD chip creating millions of colors.

DLP white dot syndrome happens when one of these micro mirrors gets stuck and 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 image that can’t be viewed.

The affordable solution

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:

Samsung DMD Chip 4719-001997
Samsung DMD Chip 4719-001985
Samsung DMD Chip 4719-001999
Samsung DMD Chip W1272-5003
Mitsubishi DMD Chip 276P595010
Board Number DMD Panel IC# 1910-6143W
Board Number DMD Panel IC# 1910-6145W
Board Number DMD Panel IC# 1910-6103W

Avoid an expensive repair bill and keep your customers happy by purchasing a DMD DLP chip for under $300.

The importance of authentic

It’s important that you install an OEM lamp and avoid a generic, compatible lamp.

The post The affordable solution for the DLP TV white dot problem appeared first on DLP Lamp Guide - LCD and DLP Repair Tips - Fix Your DLP - FixYourDLP.com.