Our church has a new PLC-XU48 - has 70 hours on the lamp life. we use for both video and text display. Last night when we switched from video to text; we notice a big area on the bottom right corner of the screen with a lot of pink or burgundy spots that changed color of display. Thanks
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Re: Pink/burgandy dots or shadow on display screen
Normally one of 2 things will cause this.
One if the small LCD panels inside has dead/stuck pixels. There are 3 individual panels that make up red, green and blue.
Dust has entere the system and is sitting on the back of the polariser. This is a thin colour film ontop of the small LCD panel that sends the right colour light through the LCD.
If it's the first one, then it will be covered under warranty.
If it is the second they will normally cover it under warranty since their dudst filters have failed to keep the dust out of the projector.
Call the number in the back of your user manual for your area and they will arrange it all with you from there.
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It sounds like the lamp is going. Do you know how many hours of use are reported on the lamp?
Many times these projectors have circuitry to shutdown when they suspect the lamp is near the end of life. Lamp hours vary and usually will go up to and even beyond expectancy, but there is occasions you can receive a bad lamp and have it blow in a matter of hours...not common but it does occur.
hi do the follwing setting on your projector to reset the lamp hour
1.Turn projector on, press MENU button and ON-SCREEN MENU will appear. Press POINT LEFT/RIGHT button to move a red frame pointer to SETTING Menu icon 2 Press POINT DOWN button to move a red frame pointer to "Lamp counter reset" and then press SELECT button. The message "Lamp replace counter reset?" is displayed. Move the pointer to [Yes] and then press SELECT button. 3.Another confirmation dialog box appears and select [Yes] to reset Lamp Replace Counter.
You do so by doing the following: 1).Start the projector. 2).Press keypad <Source> and <Auto> keys simultaneously, enter " Lamp Hour info" layer 3). Press <Source> and <Auto> keys simultaneously again, then enter factor menu. Do not change anything till you reach Lamp Layer where lamp hour and usage hour is given. If you reset, then all data revert to default - factory reset. you may chage here or under (2). Let me know if this solves your problem.
- Press exit for 3 seconds - The Menu to reset the Hours rises up - Folow the manual on your screen
Please rate our solutions and if you still have problems please call back for more ideas to help you
Thanks Richard Scott Technical Support New Zealand
It sounds like the projection lamp is beginning to show its age. How many hours of use does the unit have on the bulb? The bulb are typically rated for about 800-1600 hours of use before they go bad. The bluish image on the screen image is a typical tell-tale sign that the bulb is going to need replacing.
Most of your better projection units will have an internal time counter of the bulb life from the time the unit is first used or when a bulb is replaced. Check to see if your unit has this feature, if so it will show you on the screen display what is the total number of hours on the bulb and the estimated remaining hours of life.
Be aware that the replacement bulbs are NOT cheap and usually will cost you several hundred dollars, I have seen bulbs for professional projection units used for large convention/presentations have bulbs costing as much as $500.00 USD.
One other last thing to check is to clean the lens of the unit both inside and outside. To clean the inside, you will need to remove the bulb (be sure to wear a rubber glove as the oils from your skin will cause the lamp to blow, (causes a hot spot)). Then using a cleaning wipe, just as one used for cleaning microscopes or glasses, wipe the lenses. The discoloration might also being caused by dirt and oils on the lenses.
I hope this shed some light on your church's projection problem.
From your description, it sounds like an alignment problem. There are 3 LCD panels in the projector. Each one displays an exact duplicate image of the others except it's either red, green, or blue. Under normal conditions, the images precisely overlay one another so you get a sharp image. Due to age, heat, or vibration/shock(impact) it would appear that the red LCD panel has shifted a little, giving the "ghosting" effect. You'll have to have the unit repaired by a qualified tech. He'll have the special electronic equipment needed to align the panels properly. Before sending the unit in, try a reset in the menu. Sometimes, the projectors can shift the image electronically, using math algorithms which will try to auto-sharpen the display. Hope I was able to help!---Rick
on my XU 55 the trick to read the lamp hours is to press and hold down the power button in about 20 seconds when the projector is turned on. there will come a window in the upper left corner that tells about total hours and lamp hours. the window will disappear quite fast, so one might need to do it twice.
Turn projector on and before doing anything else, press and hold the UP arrow on the machine for 30-40 seconds WHILE watching the display screen on the wall - the remaining hours will display only momentarily - if you look away you could miss it. Cheers