Repairing Samsung HL72A650C1FXZA white dots

White dots on Samsung HL72A650C1FXZA screen can easily be repaired

Samsung HL72A650C1FXZA white dots are a sign that your DLP chip has broken and needs to be replaced.

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

Step 1

Step 1: Put on the plastic gloves. Loosen all the screws found on the back panel. 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 DMD 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 onto the TV. Put the screws back into place and tighten them. Enjoy the crisp, clear picture on your Samsung HL72A650C1FXZA RPTV.

Learn more about your Samsung HL72A650C1FXZA RPTV:

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