Question about Optoma HD72 Multimedia Projector

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Projector Did the power supply for the lamp do the trick??

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Power supply for the lamp got me an extra 600 hours... I have changed bulbs gotten 1000 or so hours from new bulb. New lamp cost me $350, lamp driver cost me $120. Then I read on a page to try and flip it right side up, because I had it ceiling mounted upside down. I flipped it right side up and it works perfectly and has been working perfectly for 2 months now. I know it sounds stupid, but it actually worked for me, and it costs you nothing to try it. For some reason, gravity effects this unit.

Posted on Feb 05, 2009

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SOURCE: Powers off and lamp never comes on (new lamp tested in other ep739)

The lamp might be burn out or you do ot have the computer in the right plug and the right input slected.

Posted on Jan 04, 2009

projdoc
  • 2236 Answers

SOURCE: Infocus projector power supply parts

you won't find schematics for them. infocus had their boards made by someone else who now no longer makes boards. it's usually the caps drying out that causes power problems.

Posted on Sep 04, 2009

  • 24 Answers

SOURCE: When I power up the projector the center of the

This problem is more likely to be the Green LCD gone. The green LCD's job is to filter out the green on the picture where it isn't necessary so If the green LCD starts to fail, it will let through too much green light. I think its more in the middle because of the heat from the bulb over time.

Posted on Nov 27, 2009

blueextc3221
  • 15935 Answers

SOURCE: Dell 2400MP Projector replacement Power Supply

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Posted on Sep 02, 2010

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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The projector would not turn on and had a flashing red light for the lamp. Knowing it was an older projector when we rented the building I purchased a new bulb for this projector. When I put the new bulb...


PROBLEM :-The power supply of the projector is faulty there is a transistor witch is switch 15 volts for the lamp drive board.

SOLUTION: Remove the upper cover with 6 screws back side of the projector.
remove main board and lamp cover with 7 screws.(show in the picture)
remove upper cover of the power supply and lamp drive unit with 3 screws.
remove power supply unit with 4 screws and 3 connectors and put face down on the table.
now you find the transistor no Q107 and replace with the transistor no 2SB710 is and surface mounted compunent(show in the picture)
fix it all as you open.
power ON the projector and enjoy

(doing very carefully This is a technical job)


good_help_17.jpggood_help_18.jpg

Feb 05, 2011 | Panasonic PT-LB10SVU Multimedia Projector

1 Answer

The projector turns on for about a minute and then the bulb goes out while the projector is still on.


The projection lamp must be confimed to prove that it is working alright. If this proves OK then check on the power supply unit for shut down due to load.
Please check on the filters to ensure that the air flow is good.
If lamp is tested Ok then the power supply can be defective and if there is no visible faulty components, the power supply unit must be changed.

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I want to disable the lamp, and keep the unit run without the lamp. The projector model is PJD62203D I would like to know where, I can make the control board look and see the lamp is still good even I did...


That sounds dangerous. But why do you want to do that? Modern Projector ballasts are quite smart at being able to "read" the state of the lamp starting and running characteristics.I think it would be very difficult in tricking a power supply into thinking it has a lamp when it doesn't.

Dec 12, 2009 | ViewSonic Projector Lamp for PJ358

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The projector comes on, shows an image, then shuts off


power supply problem. the capacitors are probably drying out. it takes a boost of power to strike the lamp, and if the power supply can't handle it, it shuts down. replace the power supply.

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InFocus LP130 Projector has intermittent power off


go into the menu to find out the lamp hours. it could be the lamp, but if the projector shuts down and not just the lamp, there is either an overheating issue, or a power supply issue.

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