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7 Feb 2021 15:12:30 UTC
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Mitsubishi WD720U DMD Replacement / General Maintenance
We go over how to change the DLP Chip inside a Mitsubishi WD720U projector. This particular projector is used in a gym that is part of a national chain. They only use the Composite input(480p) via what looks like a piece of coax wire which is most likely not even the right impedance( I suspect they use general cable wire coax 75 ohm instead of 50ohm).
Also, they want to fix this on the cheap. Since its only running 480p the budget for repair was set pretty low. I was able to work with that budget since I had some used/pulled DMD chips to use and they were fine with a little yellow spot in the corner. They said, no one can see it when its up on the wall. This projector is pretty beat. I suspect his is its last rodeo and the next time it fails, it will be put out to pasture.
This repair also work for these Mitsubishi models. FD730U, UD740U, WD700U, WD720U, WD740U, and XD700U
All that said, I ended up pulling the cover off the optic assembly after the fact and giving it a quick puff of air and that knocked the dust chunk out. I did not get video of that unfortunately but you can picture some dust floating about and me making comments...
The DMD was a 1280-6138B which is compatible with 1280-6038B, 1280-6138B and 1280-6439B. The resolution is 720 native on these chips so they are pretty popular.
If you need a lamp for this model, check out here. VLT-XD700LP https://www.purelandsupply.com/mitsubishi-projector-lamp_wd720u.html
As always, thank you for watching!
\o/
...
https://www.youtube.com/watch?v=Rp-wbQI55Ew
Also, they want to fix this on the cheap. Since its only running 480p the budget for repair was set pretty low. I was able to work with that budget since I had some used/pulled DMD chips to use and they were fine with a little yellow spot in the corner. They said, no one can see it when its up on the wall. This projector is pretty beat. I suspect his is its last rodeo and the next time it fails, it will be put out to pasture.
This repair also work for these Mitsubishi models. FD730U, UD740U, WD700U, WD720U, WD740U, and XD700U
All that said, I ended up pulling the cover off the optic assembly after the fact and giving it a quick puff of air and that knocked the dust chunk out. I did not get video of that unfortunately but you can picture some dust floating about and me making comments...
The DMD was a 1280-6138B which is compatible with 1280-6038B, 1280-6138B and 1280-6439B. The resolution is 720 native on these chips so they are pretty popular.
If you need a lamp for this model, check out here. VLT-XD700LP https://www.purelandsupply.com/mitsubishi-projector-lamp_wd720u.html
As always, thank you for watching!
\o/
...
https://www.youtube.com/watch?v=Rp-wbQI55Ew
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