Question about Optoma HD72 Multimedia Projector

5 Answers

HD72 No Lamp function after replacement.

Lamp light LED shows red, manual indicates lamp failure.  Replaced lamp, that didn't work, then replaced light driver.  No change, lamp still doesn't work. On power-up, no red LED and projector appears to start up, fan runs for about 10 sec, (no lamp light) and then fan stops running.  The projector appears to re-cycle and fan starts again for about 10 sec.  This repeats for a total of three times in about one min, then red LED lamp indicator lights up.

Posted by on

  • sa_douglas Jan 30, 2009

    Connections were checked and double checked & verified actual contact with posts on bulb (wore rubber gloves). Original bulb had less than 800hrs & new unit was purchased from reliable source. Any methodology to bench test both bulbs for functionality or continuity? At $300 plus for a bulb a third bulb isn't a viable option. Also, is there any significance on the three attempts to start when the unit is powered up? Is that a built in duty cycle of the projector that would indicate the type of failure similar to an OBD-II in a car?

×

5 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 2,110 Answers

The projector is sensing the amp draw from the bulb and shutting down due to out of spec draw...replace the bulb.

Posted on Jan 30, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Optoma Master
  • 19,396 Answers

Remove the lamp and put it back in place. Ensure all parts are well mounted after replacement.

Posted on Jan 24, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Expert
  • 153 Answers

Check the boars inside if it is proper and proper supply is going on
inside the circuit

Posted on Jan 24, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 10,594 Answers

Please double check connectors of main board because seems any connector is not plugged properly.

Posted on Jan 24, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,550 Answers

This can be because the lamp replaced may be defective.

Also the connecting cables when replacing the lamp may be disturbed . You need to check the connection .

Posted on Jan 24, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Hello, I am having a problem with my hd72/hd6800. My projector is on its original bulb and has about 500 hours over 5 years. Today i was able to turn it on, but the lamp wont light up. I hear the fan start...


Despite the relatively few hours on the lamp, the fact is it's over 5 years old. It is not uncommon for a lamp to age and be too weak to fire. Replace the lamp, you should be fine.

Jan 25, 2011 | Optoma HD72 Multimedia Projector

1 Answer

After changing the bulb image will not come on and solid orange light appears


Other then POWER BUTTON light there are three lights more
1. lamp indicator
2. temperature indicator
3. computer input
witch one light is flashing RED or illuminated RED with POWER BUTTON orange light.
If LAMP INDICATOR light is illuminated RED than lamp runtime has reached 1800 hours. but projector still working.
If LAMP INDICATOR light flashing RED than lamp circuit failure, or abnormal function or lamp unit is damaged. In this case projector doing the same behave just like your projector.
if TEMPERATURE indicator illuminating RED the projector still projecting and if flashing RED than turned of itself

Jan 11, 2011 | Panasonic PT-LB50U Multimedia Projector

1 Answer

We use NEC MT1065 and just replace its lamp but it still won't switched on (lamp indicator led is red). How can I reset it ?


Hello, unfortunately the NEC MT1060 - MT1070 series projectors have EEPROM chips built into the lamp housing which counts the hours that the lamp has been used for so the only way to reset the hours is to change the lamp for a new one, if your old lamp has only had the reflector replaced then it will make no differance because the chip tells the projector weather or not to power up depending on the hours its counted, i have not yet found a way to reset the chips even by reprogramming them, i'm afraid the only solution is to replace the lamp with an official NEC unit, but this was obviously their intention, just as an added note, a solid red lamp indicator light means that the lamp has expired, if its flashing red this means its nearing the end of its life, if the status indicator light is flashing then there could be another issue, by counting the flashes you can reffer to the manual in the troubleshooting section to diagnose the fault, I know this is very late, but anyone else reading this may find it helpfull.

Nov 29, 2010 | NEC MultiSync MT1065 Multimedia Projector

1 Answer

Lamp flashing, hd72 projector


In most projector menus there will be an option to reset the lamp timer, it's usually under the "settings" area of the menu. Try resetting the lamp timer and the light should stop flashing.

Jan 17, 2010 | Optoma HD70 DLP Projector

1 Answer

Projector's lamp won't light up.


Change thermostat and service it.Then solve your problem.

Dec 12, 2009 | BenQ PB8220 Multimedia Projector

1 Answer

Lamp light is solid orange/red; No Image on screen when pj on


Sounds like bulb to me best way to check is take it to a service centere and they will use a replacement or test bulb to find out for you , it may not be your bulb it may be your ballast circuit . ... regards Vortash

May 10, 2009 | Optoma HD72 Multimedia Projector

1 Answer

4805


In the manual there is a chart which will indicate the nature of the failure depending on the number of times the red led flashes before a pause.

Most common is the projector's lamp timer has exceeded the operational lamp time limit.

While the projector's red led is flashing, press the volume up and down buttons on the projector simultaneously and hold them both in for 10 seconds.
This will reset the lamp inhibit protocol.

However if the lamp has thousands of hours of use you need to replace it before it actually fails.

Feb 28, 2009 | InFocus ScreenPlay 4805 Multimedia...

Not finding what you are looking for?
Optoma HD72 Multimedia Projector Logo

Related Topics:

412 people viewed this question

Ask a Question

Usually answered in minutes!

Top Optoma Multimedia Projectors Experts

color wheel light...
color wheel light...

Level 2 Expert

137 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

5612 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you an Optoma Multimedia Projector Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...