Why its NOT Time to buy LED Projectors

LED (Light Emitting Diode) Projectors are on the market.  They have been for a few years now.  At first they were waffling between LED and Laser(which uses LED) and have settled on LED for the most part.  


LED is touted as “No more lamps!” which is the biggest selling point.

Is this true?  Its true that there is no lamp to replace in an LED projector.  They have no removable user parts that can be replaced. Its a sealed unit and you are at the mercy of the manufacturer.

Is this a good thing?  In my opinion, as it stands now, I say its not a good thing.  There is a lot of promise in LEDs.  They are not the lifetime lamp they claim to be.  

Being someone who works inside projectors, its been my experience that LEDs are not there yet. 

I will explain my thought and will be interested to see if my thoughts hold true in a few years.

LEDs themselves are fine. For general lighting, indicator lights and even low lumen, low cost projectors.  

Inside a projector, the LED light engine is made up of 3 chips(In most cases). I’ll be referring to LEDs as Chips since they are semiconductors.

They use a Red, Green and Blue High output chip mounted to a large heat-sink arrangement.  Those Chips are then powered by a special lamp driver made to run those Chips .

Current LEDs suffer from a problem that cause them to have a severe drop off in brightness after a certain point.  That energy then becomes heat.   The average short arc (current technology)projector is 3000-5000 lumens at 250-300watt.


For instance, the Optoma UHD60 uses a 240W Osram bulb that puts out 3000 lumens to the screen.  This means the unit uses 240W of lamp power(not 240W total power) to drive the lamp.

An LED for the same unit would need to be at least 50W per color.  That would then add up to 150W total (for RGB). The problem here is that at 50W the Chip is going to generate a lot of heat and put a lot of stress on the lamp driver.  In most cases when an LED light of any type(even incandescent replacements in your home) fails, its because of the lamp driver rather than the LED element itself.

The amount of thermal stress increases greatly as the wattage increases.  Most of the time the voltage is constant and the amperage is increased. 

Over a few amps, the thermal reliability begins to drop off significantly.  The diagram below shows the drop off of a high power Blue Chip that could be used in a projector.

Blue LED efficiency chart
Short Arc Mercury lamps such as the BL-FP240E for the above mentioned Optoma UHD60 and UHD65 on the other hand are tried and true technology.  When the lamp fails in this model you can change it.  That lamp usually lasts 2 years(with normal use). Then for a few hundred bucks you are back in operation and have a nice bright image.

If you want to use a long throw projector in an auditorium you are definitely better off with the current type of projector technology over LED. Even Laser which is advertised as effective will not give you the clarity and color rendering that a Short Arc lamp can currently deliver.

With the average LED projector warranty only being 2 years, you are then stuck with a multi-thousand dollar paperweight when the lamp driver fails or the LED overheats.  There is no reset or simple bloated capacitor fix.  It is going to need a new lamp driver module and probably a new LED module.  In my experience those parts can be much higher costing than a plain old short-arc lamp.

Last projector I worked on with LEDs, would have cost $300 for three 25 watt red, green and blue chips.  It still needed a lamp driver which was $150.  For the low-low price of $450, the customer would then have had their $315 LED projector back in operation.  Lesson learned.

Those lamp drivers and Chips are not user replaceable. There is no door you can open and pull a cartridge out and then pop in a new one.  You have to take the projector down, ship it to a repair center and wait for it to be sent back. Inevitably it will fail again.  Rinse and repeat.

With LEDs now starting to grow up, I fully believe they will be the light source of the future.

However as it stands now, they are not there yet.  Don’t let yourself be part of the manufacturers experiments.  Wait until you see a 4K 3000 lumen projector under $1000.

Until then buy an Optoma UHD60 or UHD65 and then in 2 years check back to see how BL-FP240E is going for and let me know if I was right about LEDs.

Happy Holidays from Pureland Supply! Have a Safe and Pleasant Holiday Season!

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10 Tips to Prolong Lamp Life from Pureland Supply

Projector lamps are most important to your projector. Prolong their life with these tips.

1.  Handle the Projector Lamp with gloves. Oils and deposits from hands and fingers can cause hot spots on face of the Projector Lamp, which may result in premature Lamp failure.  Gloves also insure against any smudges that could get on the glass lenses or the projector or the lamp itself.
2.  Operate your projector in a clean, cool, and well ventilated area. A dust free environment would be ideal.  It may be advantageous to look into a ventilation system or air filtration system in the area that the projector will be operating in.
3.  Keep the projector air filters and air vents clean. Clogged filters/vents will not remove heat effectively. This can cause the projector to overheat with an early lamp failure.  During routine maintenance it is recommended to vacuum any loose debris and dust from the projector.  You can also get a can of sealed air to blast out any small particles and dust from the air vents and filter.
4.  Do not place anything on top of the projector or in front of the intake or exhaust vents. This will cause the projector lamp to overheat and fail. Refer to your manual for safe placement of the projector and the accessories.  The vents should be operating in an unrestricted environment that has strong air circulation.
5.  If the projector is built into a compartment, wall, ceiling, or shelf mount, the minimum distance requirement is usually at least 2 feet.  This allows enough space to dissipate any heat that will build up.  Refer to your owner’s manual for specific recommendations.
6.  When you replace the projector lamp make sure the new housing is seated completely and securely. Pureland Supply continually gets phone calls and inquiries from customers that think they have a defective lamp when in actuality they simply didn’t push the lamp in far enough.  Pay attention to the old lamp. Re-install and remove the old lamp a few times to get familiar with the how it fit into your projector. When you install the new lamp you can seat it firmly but without too much pressure.  Use the screws to tighten the lamp into its final position.
7.  Hot Projector Lamps are fragile. Do not move or shake the projector until the Projector Lamp has completely cooled. Shock and vibration applied to hot projector lamps may cause the lamp to break or shorten its effective lifespan.  It is recommended that after operation you let the lamp cool at least an hour before handling the projector or lamp.
8.  Do not unplug the projector until the Lamp has properly cooled. After the projector has been shut off, the fan will remain on for a period. This is required for proper cooling of the lamp.  If the lamp is not cooled properly it will cause the life of the lamp to be shortened drastically.  This is a critical point where many people unplug their projector during use in order to turn it off.  By doing this the lamp is extremely hot and has no air circulation resulting in damage or shortened life of the lamp.
9.  Do not turn the projector on and off frequently during presentations. Each time the projector is switched on, the inrush of power causes stress on the Projector Lamp as does the thermal cycles (heating cooling). Try to minimize your on/ off cycles by not frequently turning on and off. If you are not using the unit for less than 30minutes, use a screen saver or video mute option that some models offer.
10.   Wait until the fans stop running before attempting to turn a projector back on after use. Forcing the Projector Lamp to start before it is adequately cool will cause a thermal and electrical shock to the bulb causing the life to be shortened.
It is recommended that you have your projector serviced and maintained approximately every 2 years.
Preferably have the projector cleaned for dust buildup seasonally.
Insist on high quality projector lamps with the original manufacturer’s bulb inside (Made by Philips, Ushio, Phoenix, or Osram).  All lamps are available for sale at PurelandSupply
Call or Visit Pureland Supply at 1-800-664-6671 to get additional information on any type of Projector Lamp.
Pureland Supply
210 Gale Lane
Kennett Square PA  19348
Phone: 800-664-6671

Fax: 888-880-8874
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Lamp Timer Reset Reference from Pureland Supply

Pureland Supply Lamp Timer Reset Reference
3M Projector Lamp Timer Reset:
1.  Turn on the 3M projector after replacing the lamp
2.   Press “reset” on the 3M projector remote control for 3 seconds.
3.   The 3M projector dialog box now appears
4. Press “reset” using the up button on the projector remote
5. Use your menu to check your lamp hours to confirm the reset.
Acer Lamp Timer Reset:
  1. Power on Acer Projector with new lamp installed.
  2. Press MENU on Remote
  3. Press down arrow key to MANAGEMENT, then right arrow.
  4. Press down arrow key to LAMP RESET
  5. Right arrow over to bring up “YES / NO” screen
  6. Left arrow to select “YES”
  7. Press MENU to accept.
  8. Press MENU again to exit and save
  9. Lamp timer should now be reset.

Barco Lamp Timer Reset:
1. Plug in the projector unit after replacing the lamp.
2. Press the POWER key.
3. Display the FEATURE menu in the ADVANCED menu.
4. Select ADVANCED MENU by pressing the or key.
5. Press ENTER.
6. Select LAMP 1 TIME RESET or LAMP 2 TIME RESET by pushing or .
LAMP 1 TIME RESET
LAMP 2 TIME RESET
7. Press ENTER.
The conrmation dialog appears.
8. Reset by pressing the ENTER key.
BenQ Lamp Timer Reset:
  1. Turn on Projector after replacing lamp. Be sure lamp cover is securely installed.
  2.  Press the “Exit” button on the projector’s control panel and hold it for three seconds. Release the button when “Lamp Hours” appears on the screen. 
  3. Press “Menu,” then press the arrow navigation buttons to adjust the lamp hours on the display. Reset the lamp hours to “00:00”. 
  4. Press “Exit” to save the new lamp hour setting and start the timer over for the new bulb. 

**Complete the Lamp Timer Reset within 10 minutes of turning the machine on for the first time after replacing the lamp. **
Boxlight Lamp Timer Reset:
  1. Power on Boxlight projector with after replacing lamp.
  2. Go to the Boxlight projector menu using the remote.
  3. Use arrow keys on remote to navigate to “settings” option.
  4. Navigate to “Lamp Counter Reset” option press “SELECT” button.
  5. Select “yes” option and press “select” when the “reset lamp counter” is displayed. 
  6. Lamp hours should not be reset.

Canon Lamp Timer Reset:
  1. Power up Canon Projector after replacing lamp.
  2. Press the Menu button and the on-screen menu will appear.
  3. Press 3/4 button to remove the red frame pointer to the setting Menu icon.
  4. Press the number Six button to move the red frame pointer to the Lamp Counter Reset item and then press Select button.
  5. The message “Lamp Replace Counter Reset?” appears. Move the point to and then press Select button.
  6. Another confirmation dialog box appears and select to reset the Lamp Replace Counter.

Christie Lamp Timer Reset:

**Christie Lamps have a built-in Lamp Timer module that automatically reset the lamp timer when installed. There is no manual Timer Reset option for these models.
PurelandSupply Tests and verifies each Lamp before shipping to guarantee the Lamps Built in timer is functioning properly and will Reset your timer upon installation.
The Projector must have its Filter counter reset manually.
Christie Projector Filter Reset:

RESETTING THE FILTER COUNTER
  1. Switch the power button to ON.
  2.  Press the MENU button to display the On-Screen Menu. Use the cursor buttons to move the red frame pointer to the Setting Menu icon.
  3.  Use the Point buttons to move the red frame pointer to Filter counter and then press the SELECT button. A dialog box appears showing the Used time option and the Scrolls remaining option. Use the Point buttons to select Used time.
  4. Used time shows the total accumulated time of the filter use, a timer setting option, and the Reset option. Select Reset and the “Filter counter Reset?” appears. Select [Yes] to continue.
  5. Another confirmation dialog box appears, select [Yes] to reset the Filter counter                 

NOTES: 1) The FILTER TIME value shown on the EASY menu is the use time since the last time the FILTER TIME was reset. Refer to the value for proper maintenance. 2) Do not reset the FILTER TIME without replacing a filter.

Dell Lamp Timer Reset:
1. Press the “Menu” button to turn on the projector’s on-screen menu.
2. Use the “right arrow” button to highlight the projector’s “Lamp” menu option and press the “Enter” key to select it. The Enter key on the projector is located in the center of the directional keypad and has a check mark on it.
3. Use the “Down Arrow” to highlight the “Lamp Hour Reset” option.
4. Press the “Right Arrow” to highlight the “Yes” option and press the “Enter” key to select it and reset your lamp.
5. Press the “Menu” key to exit the projector’s menu system.
Dukane Lamp Timer Reset:
Reset the lamp timer after replacing the lamp. When the lamp has been replaced after the LAMP indicator is red, or the CHANGE THE LAMP message is displayed, complete the following operation within ten minutes of switching power ON. The power will be turned off automatically in over 10 minutes.
1. Switch power ON, and press the RESET button, for approximately three seconds. The ‘LAMP
xxxx hr’ message will appear on the lamp timer on the bottom of the screen.
2. Press the MENU button on the remote-control transmitter, or the RESET button on the control
panel, while the lamp timer is displayed. The ‘LAMP xxxx
then appear.
3. Press the
and select 0, and wait until the timer display is cleared.
NOTE
Do not reset the lamp timer without replacing the lamp. Reset the lamp timer always
when replacing the lamp. The message functions will not operate properly if the lamp timer is not
reset correctly
Eiki Lamp Timer Reset
1.While simultaneously holding down “MENU/HELP”, “ENTER” and Right Arrow” on the projector, press “STANDBY/ON” on the projector.
2. “LAMP 0000H” is displayed, indicating that the lamp timer is reset
Epson Lamp Timer Reset:
1. Press the “Menu” button to open up the projector’s menu system.
2. Use the “Down Arrow” button to select the “Reset” menu option and press the “Enter” key.
3. Press the “Down Arrow” until the “Reset Lamp Hours” option is highlighted and press the “Enter” key.
4. Highlight “Yes” to indicate that you want to reset the lamp timer, and press “Enter” to reset the timer.
5. Press the “Esc” or “Menu” key until you have exited the menu system.
Hitachi Lamp Timer Reset:
  1. While the projector running, press the MENU button to open the menu. (2)
  2. Choose the “OPTION” on the menu using the / button, then press the button or ENTER button.
  3. Choose the “LAMP TIME” using the / button, then press and hold the RESET button for 3 seconds.
  4. Choose the “RESET” using the button.

* When the lamp has been replaced after the message of “THE POWER WILL TURN OFF AFTER 0hr.” is displayed, complete the following operation within 10 minutes of switching power on.
* Incorrectly resetting of the lamp timer (resetting without replacement, or neglect of resetting after replacement) will result in incorrect message functions.
Infocus Lamp Timer Reset:
1. Press the “Menu” button to activate the on-screen menu system.
2. Press the “Right Arrow” button until the “Installation II” sub-menu option is highlighted.
3. Use the “Down Arrow” button to highlight the “Advanced” option and press the “Right Arrow” or “Enter” button to enter the sub-menu.
4. Use the “Down Arrow” to navigate down to the “Lamp Hour Reset” option and press “Enter” or “Right Arrow” to activate it.
5. Press the “Down Arrow,” “Up Arrow,” “Left Arrow” and “Right Arrow” key to reset the lamp timer.
6. Press the “Menu” key a few times until you exit the menu system.
JVC TV Lamp Timer Reset:
Lamp Timer Reset
The lamp replacement message will appear when you need to change the lamp.  After you replace the lamp, you need to reset the timer which is built into your television.
  1. Press the MENU Button until you get to LAMP TIMER RESET
  2. The following message will appear. “PRESS OK TO RESET THE LAMP TIMER.”
  3. Press the OK button while the above message appears on the television screen.
  4. Now your LAMP TIMER is reset properly.

Liesegang Lamp Timer Reset:
1. Switch power ON after replacing the lamp, and press the TIMER button on the remote control transmitter, or the RESET button on the control panel, for three seconds. The ‘LAMP HOURS’ message will appear on the lamp timer on the bottom of the screen.
2. Press the MENU button on the remote control transmitter, or the RESET button on the control panel, while the lamp timer is displayed. The ‘LAMP HOURS’ then appear.
3. Select 0, and wait until the timer display is cleared
Mitsubishi Lamp Timer Reset:
  1. Plug the cable in, but do NOT Power on the projector
  2. Push the POWER button simultaneously with the < and > buttons for about 3 seconds. 
  3. The Status light will Flash 2 times indicating a successful reset.

This Procedure works for most Mitsubishi Projectors.
NEC Lamp Timer Reset:
  1. Press Menu on the remote control or the projector cabinet.
  2. The menu appears.
  3. Using the Select buttons on the remote control or the projector cabinet, scroll down to Default, and then press Enter.
  4. A submenu appears.
  5. Scroll down to Clear Lamp Hour Meter, and then press Enter.
  6. The lamp usage hours counter resets.

*If Projector will not turn on at all after lamp install, hold down the HELP button on the remote (Only the remote) for about 10 seconds.  The Status light will change color indicating the timer is now reset and the projector is no longer in protection mode.
Optoma Lamp Timer Reset:
  1. Turn on the projector and press menu on your remote (or projector unit)
  2. Now Select SYSTEM and go to lamp settings.
  3. Please select Lamp Reset and then press YES.
  4. Press MENU to exit and your lamp timer should now be reset

Panasonic TV Lamp Timer Reset:
  1. Plug the television set back into the wall socket.
  2. Press and hold down the “VOL -” button on the television set’s control panel. While doing this, aim your remote control at the TV.
  3. Press and hold its “PIP” button. If you have a set with model number PT-xxLC14 where the “xx” could be 43, 50 or 60, press and hold the remote control’s “Split/Play” button instead of the “PIP” button. 
  4. Release the two buttons when a message comes on the TV screen letting you know that the timer was reset to zero hours.
  5. Press the “Enter” button in the center of the remote control’s directional control keys to exit the message. Your television is now ready for normal use.

Panasonic Lamp Timer Reset Procedure:
Warning: perform the lamp time reset only when the lamp has been replaced.
1. Press the power button to turn the unit on.
2. There are 3 choices for this step, depending on the housing part number:
A. TY-LA1000, TY-LA1500 or TY-LA2005 While pressing the VOL- button on the projection display, hold down the PIP or SPLIT button on the remote control at the same time for more than 5 seconds.
B. TY-LA1001 or TY-LA2006 While pressing the VOL- button on the projection display, hold down the number 0 button on the remote control at the same time for more than 5 seconds.
C. TY-LA2004 While pressing the VOL- button on the projection display, hold down the MUTE button on the remote control at the same time for more than 5 seconds.
3A. When the reset procedure is complete the following screen will appear:
LAMP TIME WAS RESET TO 0 (this screen may be different from the actual screen)
OR
3B. The POWER and LAMP LED’s on the front of the unit will flash for 5 seconds. (TY-LA2006) When the lamp time reset is finished, the LAMP indicator goes out
Projection Design Timer Reset:
Projection Design Lamps use a built-in lamp timer to the lamp itself. The circuit board installed carries the time on the Integrated circuits.  There is no way to manually reset a lamp timer on a Projection Design Lamp. 
Pureland Supply Checks and verifies every lamp timer module before they are stocked to ensure proper operation to the end user.
Proxima Lamp Timer Reset:
Switch power ON, and press the TIMER button on the remote controller, or the RESET on your control panel, for approximately three seconds. The ‘LAMP Hour’ message will appear on the lamp timer on the bottom of the screen.
 Press the MENU button on the remote controller, or the RESET button on the control panel, while your lamp timer is displayed. The ‘LAMP Hour’ message will appear.
 Press 0, and wait until the timer display is cleared
Runco Lamp Timer Reset:
  1. Turn on your projector after replacing the lamp
  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 until you reach Lamp Layer where lamp hour and usage hour is given. If you reset, then all data revert to default – factory reset.
Sanyo Lamp Timer Reset:
  1. Turn the projector on after replacing your lamp and press the MENU button to display the On-Screen Menu.  
  2. Select the Setting Menu with the Point buttons.  
  3. Select Lamp counter reset and then press the Point buttons. “Lamp replacement counter reset?” appears. 
  4. Select [Yes] and then press the OK button.
  5. Another confirmation dialog box appears, now select [Yes] to reset the Lamp counter

Toshiba Lamp Timer Reset:
  1. Unplug the power cord from the electrical outlet. 
  2. Replace Lamp. Leave Projector Unplugged
  3. Turn the main power switch to the “On” position. Do not Turn on Projector.
  4. Press and hold the “On/Standby,” “Menu” and “Input” buttons at the same time. The buttons are on the projector. Though the same buttons are found on the remote control, the reset only works with the buttons on the projector.
  5. Plug the power cord back into the outlet while holding the buttons in Step 3. The lamp timer will reset when the projector receives power.

Sharp Lamp Timer Reset:
Using the Command Buttons
1. Plug the projector in after replacing your projector lamp.
2. Press and hold the down arrow along with the “Enter” and “Menu” buttons.
3. Press “Standby” on the projector control panel while holding the other buttons. Watch the display for “LAMP HOURS” to appear. This indicates the lamp hours are reset.  Now release the buttons.
If You are Using the Directional Pad
1. Replace the lamp and then plug in the projector.   Press and hold the down and right arrow buttons as well as the “Enter” button.  Press the “Power On” button on the control panel while pressing the other buttons. Watch for “LAMP Hours” to appear on the display, indicating that the lamp hours have reset. Release all of the buttons
Sim2 Lamp Timer Reset:
You need to press 2 buttons on the remote then enter a five digit number to enter the service menu to reset the lamp counter.  You may have to contact Sim2 for support for Lamp Timer Reset instructions
Viewsonic Lamp Timer Reset:
After you have replaced the projector lamp the “THE POWER WILL TURN OFF AFTER 0hr.” message is displayed, complete the following steps within 10 minutes of switching power ON. Please note the power will be turned off
automatically after 10 minutes:
Switch POWER ON, and press the RESET button, for approximately three seconds. The “LAMP HOURS” message will display on the lamp timer on the bottom of the screen.
Press the MENU button on the remote-control transmitter, or the RESET button on the control panel, while the lamp timer is displayed.
Press the Left Arrow and select 0, and wait until the timer display is cleared
Vivitek Lamp Timer Reset:
  1. Press the Menu button
  2. Press left/right arrow keys to move to the Setup menu.
  3. Press up/down arrows to move to the Advanced menu, now press enter
  4. Press the cursor up/down arrows button to Lamp Hour Reset.
  5. Press Enter.
  6. Your lamp timer should now be reset.

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4 Common Mistakes that Projector Owners Must Avoid

Your projector might be a small unassuming device you throw in your laptop bag between presentations. It might also be a venerated piece of gear carefully installed into your Home Theater.  Maybe you are tasked with handling a school districts worth of SmartBoards…
In any of these situations there are 4 common mistakes people make when they own a projector. These mistakes are not only annoying but can also be costly to rectify.
1. Ordering a Cheaper lamp that “looks” OK.  
Sure, that lamp might be under $50 and says it will run in your projector but as I mentioned in an earlier blog, your cost of ownership can be over 4X what it should be if you had purchased an Original Inside lamp.  Check with the company and see what brand bulb is inside.  Your old lamp will have markings on that bulb. Make 100% sure your new lamp is the same as the old one.  The adage of “if it looks too good to be true, it probably is” holds very true here.
2. Replacing the bulb portion only. 
Always buy a full lamp if its available.  This is/has been advertised by many companies over the years. They offer an explanation that you can get away with only replacing the bulb since the bulb is the only part of your lamp that goes bad right?  In most cases this is not true. While the plastic and metal structure of the lamp will handle tens of thousands of hours of heat, the other parts, such as the lamp’s lens and wires will not.  On a lamp for a DLP projector, there is a special coating that is applied to the lens. That coating blocks harmful ultraviolet and Infrared light from entering the optic path of your projector. Since that coating has degraded over the years, your 2500 hours lamp housing now is only blocking a percentage of that UV/IR light.  That now un-blocked light is attacking your optics.  It will cause the lenses inside to heat-up and eventually start melting. The more concerning problem is that you are exposing you, your family or coworkers to dangerous invisible UV/IR light over a few dollars.   I will say, there are a handful of projectors who use a built in IR/UV filter that is made to handle repeated bulb replacement. These are few and far between. For a few dollars more you will have the peace of mind knowing you are protecting your investment as well as the safety of yourself and those around you.  This BenQ 5J.05Q01.001 is a good example. The lens on the front shows the coating. This is also a problem for cheap lamps. They use an inexpensive coating that will not work as well. The glass has a ‘green’ shine to it. If you see that send the lamp back.
3. Resetting the Lamp timer without replacing the lamp.  
This is a bad idea. While you are probably thinking you are putting one over on the manufacturer, you are only putting your projector at risk.  The time limit on your projector lamp is determined by the manufacturer of your projector. They determine this by seeing how long the lamp can run before the light output drops past a certain threshold (varies per model) and/or when the lamp may be getting deformed from heating cycles(on and off).  Once a lamp begins to deform, it has an increased chance of rupturing.  If you lamp ruptures while running, the chances of damaging the projector also increase dramatically. That “replace lamp” warning is the best time to buy a new lamp.  If your old lamp still works, then put it away as a backup. Your new lamp will be much brighter and will ensure longer functional life of your projector.
4. Not cleaning your projector often enough.  
This is by far the most common mistake I see with projectors. A dirty projector is a projector that is unable to cool properly.  That will lead to shortening the life of the lamp and the projector itself.  No matter how clean your house is, there is dust in the air.  That dust is pulled into the projector via the cooling fans. Electricity generates a static charge which causes the dust to stick to components inside. Over time that dust will cover the heatsinks that cool electronics like the DLP chip. That dust will build up on the leading edge of the Lamp cooling fan blades. Once enough blades are coated the fan will no longer push enough air through the lamp.  When your lamp is running at 500F and that air stops flowing, you can expect 700F+ at the lamp. That corresponds to increased heat throughout the projector. The lamp will finally reach the temperature for the Quartz to become soft. Once that happens it’s only a moment before the arc tube in the center of the lamp ruptures. I recommend having your projector opened and cleaned at least once a year.  At the least, take a vacuum cleaner and some canned air (air duster, not Perri-Air) and blow out and dust through the intake/exhaust vents on the side.   In the future I will address cleaning to a more direct degree.
There are other mistakes and suggestions, but these are the top 4 that I see. A few weeks ago, I had the pleasure of cleaning some NEC V260X projectors that had never been cleaned in 7 years.  They had enough dust that I could weigh it.  They also had bad color wheels because of the heat and would sometimes get as much as 200 hours before a new lamp would fail. After cleaning them and replacing the color wheel, the NP18LP lamp I installed will run for its entire expected life.

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How Close Can I Get? Short Throw Projectors

What is a Short Throw projector? I promise it’s not what you do when your lamp dies early..

Buying a new projector can be daunting. There are so many to pick from. Especially if you need a specific type like a Short throw.  What is a short throw projector you ask and why might you need one?

Sometimes your space doesn’t allow for a standard distance from the screen.  Many basements and home theaters allow the projector to be installed 10-20 foot back from the screen.  Occasionally you need to mount the projector very close (less than 1-5foot back).  The problem then becomes the image cannot be made large enough with the standard lens. This is where the short throw projector comes into play.

A short throw lens uses a special optical design that makes it easy to position the projector close to the screen without sacrificing image size.  You will see this very often in schools.

When the schools use a Smartboard system, it relies entirely on short throw projectors such as the Smartboard UF55 which uses a 20-01032-20.  This lamp with housing uses an original 215W Osram lamp, projecting 2000 lumens via the projectors short throw lens.
These models use the short throw lens design to allow a 100″ image from only 2 feet away. This allows the mounts to be very close to the screen. They both utilize a standard projector lamp, part # but allow a full sized image without sacrificing space.

This can be useful at home. You can use a smaller room and still enjoy movie theater-like image sizes.  The Steelcase Polyvision PJ905 with a 2002031-20 lamp is a short throw projector that supports up to a 1080p input.  There are other models that use short throw lenses as well. Picking the right projector will be a series in this blog by itself so I wont go into it here.

Steelcase Polyvision PJ905 Projector 2002031-001 lamp

Using a short-throw projector at home can save you a lot of setup and configuration hassle. It opens up a lot of spaces that used to not be convenient for a projector. Even if you live in a narrow apartment, a short throw projector can work in as little as 10″ from the screen. Many projectors have a short throw lens as an option.  That would manufacturer dependent.  Buying a lens already installed is also an option.

Stay tuned for our upcoming series on choosing a projector. In the meantime feel free to contact us with any  questions you might have at Support@PurelandSupply.com or Sales@purelandsupply.com

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