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.
- 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: 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: Loosen the two screws holding the lamp bracket in place.
Step 3: Remove the 4 screws holding the lamp engine in place. Disconnect all the connectors. Important: don’t yank any cables.
Step 4: Carefully remove light engine from the cabinet.
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: Carefully disconnect the cables between the terminal board and lamp.
Step 7: Disconnect the clip connecting the cooling unit.
Step 8: Remove the cooling unit and terminal board.
Step 9: Remove the terminal board.
Step 10: Loosen the 7 screws holding the terminal cover in place. (Good time to dust this section).
Step 11: Carefully pop the terminal out of its holder.
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: 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: Put the terminal back into its holder.
Step 15: Tighten the 7 screws holding the terminal in place.
Step 16: Replace the terminal board’s cover.
Step 17: Reconnect the clip holding the cooling unit.
Step 18: Re-connect the cables between the terminal board and lamp.
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: Carefully replace the light engine back into the cabinet.
Step 21: Replace and tighten the 4 screws holding the lamp engine in place. Re-connect all the connectors.
Step 22: Put the light engine back into the RPTV. Tighten both screws that keep the back bracket in place.
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.