Question about Mitsubishi Office Equipment & Supplies
You can try reset by holding power video and computer buttons for 2 minutes. IF it tries to come on then goes off it is the lamp. Do you have a remote?
Posted on Nov 26, 2013
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Posted on Jan 02, 2017
Thats the projector telling you that you need to replace the lamp. Lamps usually lasts for about 2000 hours so if you had it for a while you may need to replace it.
www.froogle.com and enter your make and model or go to www.projectorcentral.com and find a few retailers in the US that sells lamps.
Posted on Jan 02, 2008
green green is power on, normal
then it tries to light the lamp, but it can't so the protection circuit comes activated.
you get red and green blinking
Then it goes to standby, red and off.
so something has happened to the lamp, or lamp ballast power supply.
Take the lamp out and check if all is OK with the 2 terminals in the connector, and the leads to the lamp are intact.
Failing that, I would suspect the ballast lamp power unit
Posted on Mar 26, 2011
If your comfortable w/surface mount troubleshooting and soldering,
download the service manual from elsewhere online. Part of the
troubleshooting tree for this type of problem is to check the surface
mount fuses on the underside on the Main PWB (schematic page 1/8). On
mine, the 12V surface mount fuse, F3004 (2.3A) was open (quadrant C1 on
the schematic). Replaced it, reassembled the projector (3 interlocks
don't 'cha know) and it came up just fine.
Posted on Dec 10, 2007
Both power light and status light a solid red with no response to any buttons indicates the bulb timer has expired. You need to reset the timer by pressing and holding the left arrow key, the right arrow key and the power button all at the same time for a few seconds.
If there are no problems, the projector will fire up, but you must replace the bulb as it will fail soon and perhaps explode when it does.
Posted on Mar 23, 2009
I have done this on several of our PT-LB50U's with sucess every time.Remove lamp cover and lamp.Then remove top of case by removing 6 screws on bottom.Remove metal shroud that would cover lamp 2 screws and remove 2 screws that hold lamp plug and move it away.You will see a little blue lever for saftey switch move it back and forth from top and bottom put back together and should turn on.
Posted on May 13, 2010
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