Eliminate Mitsubishi WD-73737 white dots with a new 4719-001997 DLP Chip
Are those annoying white dots showing up on your Mitsubishi WD-73737 screen? Replace the 4719-001997 DLP Chip
Known as Mitsubishi white death syndrome, this problem can be solved by installing a new Mitsubishi/Toshiba 4719-001997 DLP Chip 1910-6143W.
Note: These instructions can also be used for the following Mitsubishi models:
WD-57733, WD-57734, WD-57833, WD-60638, WD-60733,WD-60735, WD-60737,WD-60738, WD-60833, WD-60837, WD-60C8,WD-60C9, WD-65638,WD-65731, WD-65733,WD-65734, WD-65735, WD-65736, WD-65737, WD-65738,WD-65833,WD-65835,WD-65837, WD-65838,WD-65C8,WD-65C9, WD-73638, WD-73640, WD-73642, WD-73733, WD-73734, WD-73735, WD-73736,WD-73737, WD-73738, WD-73833, WD-73835,WD-73837,WD-73838, WD-73840, WD-73C11, WD-73C8, WD-73C9, WD-75837, WD-82737, WD-82738, WD-82838, WD-Y657 WD-C657,WD-Y577.
Find this new Mitsubishi/Toshiba 4719-001997 DLP Chip 1910-6143W on Amazon and then follow our step-by-step visual guide.
- 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
How to replace the 4719-001997 DLP Chip
Step 1: Put on the plastic gloves. Loosen all the screws found on the back panel.
Step 2: Put the screws to the side. Gently remove the back panel.
Step 3: Remove the 3 screws holding the lamp engine in place.
Step 4: Disconnect all the connectors. Important: don’t yank any cables.
Step 5: Carefully slide the light engine from the cabinet.
Step 6: Remove the 3 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 7: Carefully disconnect the cable between the terminal board and lamp.
Step 8: Disconnect the cables connecting the color wheel.
Step 9: Loosen the 3 screws holding the cooling unit/fan to the terminal board.
Step 10: Remove the cooling unit.
Step 11: Loosen the 2 screws holding the terminal cover in place. (Good time to dust this section).
Step 12: Loosen the 10 screws holding the terminal in place.
Step 13: Carefully pop the terminal out of its holder.
Step 14: Unlock the old DLP Chip from the terminal. You may need to loosen the screw on the side or use a flat edged screwdriver to pop it out.
Step 15: Place the new DLP chip into place. Handle the DMD DLP CHIP only by the edges because it is very sensitive to antistatic electricity.
Step 16: Put the terminal back into its holder.
Step 17: Tighten the 10 screws holding the terminal in place.
Step 18: Tighten the 2 screws on terminal board’s cover.
Step 19: Put the fan unit back on.
Step 20: Tighten the 3 screws holding the cooling unit/fan to the terminal board.
Step 21: Reconnect the cables connecting the color wheel.
Step 22: Reconnect the cable between the terminal board and lamp.
Step 23: Replace the color wheel protective cover and tighten the 3 screws.
Step 24: Re-connect all the cables running from the terminal board and light engine.
Step 25: Carefully place the light engine back inside the unit. Tighten the 3 holding the terminal board and light engine in place.
Step 26: Put the back panel back onto the TV.
Step 27: Tighten all the screws on the back panel. Enjoy your crisp, clear picture on your Mitsubishi WD-73737 RPTV.
Learn more about your Mitsubishi WD-73737 RPTV:
Find this new Mitsubishi/Toshiba 4719-001997 DLP Chip 1910-6143W on Amazon.
The reason the DLP chip fails is it overheats.
It’s got a 180W lamp shining on it, and when the gray heatsink tape dries out, the DLP cooks.
You need to scrape the gray heatsink tape off the heatsink with your fingernail, wipe and clean the heatsink and DLP surfaces with 91% rubbing alchohol. Apply quality heatsink compound such as Aavid Thermalcote I to both heatsink and DLP surfaces. Do not cinch down the heatsink screws. Back them off a little so the springs do their job and allow the heatsink to float and lay flat against the DLP.
I think following the instructions above without using new heatsink grease will result in white dot failure again. Mitsubishi cheaped out on the heatsink grease, and all these sets are failing.
A couple of technical errors.
Dissipative gloves, rather than plastic gloves, are recommended. Plastic gloves build electrostatic charge. The gloves shown are the typical black dissipative gloves.
Step 15. I believe you meant to write “sensitive to electrostatic discharge” not antistatic. 🙂
Just ordered a replacement board. These instructions will make the swap very easy. 10-Q
Thanks for the corrections. They’ve been put into the blog. Glad the instructions helped.
the fixyourdlp Team
We changed out the chip and it’s not the same as the one that was in there. The new one has a smaller window and it shows a very small screen in the middle of our screen.
Did you check the serial number on the chip? It should be the chip created for the Mitsubishi WD73737. Did you buy from an OEM manufacturer? Texas Instrument may have continued upgrading and so the chip is different. Can you call the vendor and request another one?
Thanks so much for this tutorial! You saved my unit from the garbage. I followed your instructions along with James (replacing the heatsink)…total cost, $271.00!! (new DLP chip, 178.00 (ebay), new bulb 59.99 (ebay), some DustOff 3 cans 17.99 (ebay) and a DLP kit (included the heatsink) 14.99 (amazon). Your instructions and photos were perfect…My unit inside was a slight bit different but not anything this old mom couldn’t figure out! You saved me a ton of money! I’m very grateful!! Thanks Again!
We are so happy everything worked out and our guide was helpful.
Followed instructions, but I have a 3 inch wide black line going across bottom of screen now. What did I do wrong?
It sounds like bad capacitors on the logic board or even a bad connection on one of the ribbon cables came loose. Try unplugging the TV and remove the back cover, then unplug and reattach all Ribbon Cables. Re-attach the cover, plug the TV back on and see if the black line has disappeared. Have you considered joining our forum? there are many more experts there who can help you out.