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InFocus SP-LAMP-017 Projector Lamp for LP540, LP640, C16 Questions & Answers
LP540 Projector Lamp Does Not come on> it has
Hi,
It's most likely the lamp is bad or the part that starts the lamp called a ballast is bad. The LP540 model has an issue with the ballast burning out. The ballast is a part that starts or strikes the lamp. The only sure way to test is to try starting it with a known good lamp.
You can check for signs of a bad lamp. Think about how long you've had your projector & estimate the total hours on your lamp. If it's over 500 it very well could be the lamp as they fail at any time. Remove the lamp cover door & pull out the lamp to visually inspect it. Look in good light & use a magnifier if available too check for any cracks or chips in the small bulb & look to see if the round part of the small bulb is covered with a lot of white or if it's not round anymore. If it's very white it means it has a lot of hours on it. If there's any loose glass inside (check by turning the lamp cage in different directions) then the lamp is bad. If it's nice & clear or has only a small white spot it's probably a good lamp.
I repair almost all Infocus models if you need a quote.
Thanks & good luck,
Jim
5/26/2014 10:31:48 PM •
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Answered
on May 26, 2014
I have infocus sp5000 and
there isn't one. you need to see the menu. but what color is the led and is it blinking?
green- all is well
red blinking:
1 time- lamp not striking after 5x.
2 times- lamp has more than 3000 hrs. replace lamp.
3 times- lamp failure. replace lamp.
4 times- fan failure. shuts down.
5 times- undiagnosed error. possibly ballast or colorwheel.
if the colorwheel won't spin, the lamp won't light. when you turn on the projector, do you hear a high-pitched whir? if not, the colorwheel needs replacing.
6/23/2011 5:14:41 PM •
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Answered
on Jun 23, 2011
I have no power when I power on the power buttom.
Hello,
This problem is quite common in the LP640 and the LP540.
I have repaired about 75 of them with this symptom and every one had the same solution.
There are 2 power supplies in the projector. the issue is with the one right the rear panel. If you have moderate electro mechanical skills you can repair it. You will need to remove the power supply to perform this repair. You will also need a good temp regulated soldering iron (and know how to use it well) You will also need an OHM meter. You will find 4 surface mount diodes near one end of the power supply board. these diodes are approximately 3mm X 5mm and black in color. One of these is shorted!! use the ohm meter to measure each one. the shorted one will measure very differently than the other three. one of them will be less than 10ohms. you can buy a replacement diode from DIGI-KEY if you call them you can give them the part # on the bad diode and they can supply you with the same part or an equivalent substitute.
You will need to remove the top board and the screws on the rear of the projector (even the ones on each side of the "D" connectors)
The flexi cables that connect the LCD's to the main board as well as the 3 connectors they fit into are very delicate! Again if you don't know what you are doing you can cause much damage and possibly total the projector. anyway the LCD flexi cable connectors have a very small brown piece that runs the length of the connector opposite from the side the flexi cable is fitted into. This brown plastic pieces are part of the clamping mechanism that holds the cable in. to release the flexi cable the brown plastic piece hinges up toward the flexi cable releasing it. This brown part moves easily so do not force it! anyway if all this is above your skill level have someone else who is qualified do it. You do not need a new power supply! the Diode is about $0.78 and a power supply is closer to $150
Good Luck!
1/2/2011 9:41:45 AM •
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Answered
on Jan 02, 2011
I have replaced new lamp to InFocus LP540
To reset the lamp timer , press the increase volume button on the remote and the increase volume button within 3 seconds
The maintenance manual is on the infocus web site
8/25/2010 12:50:18 PM •
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Answered
on Aug 25, 2010
Infocus sp5000 red led blinks once indicating lamp
be sure and reset the lamp hours. Flash the software if you can. These are also notorious for the ballast cable on the inside of the lamp housing backing out when a lamp is removed or replaced. If you have the cover off push the cables back into place and hold them there as you install the lamp. Also look directely at your lamp in the center and move it side to side and up and down. If there are any cracks or frosty looking spots or bubbles in the mirror of the lamp that are visible, then the lamp is probably shot. If all this fails, most likely it is the power supply, or the lamp door has gotten mishapen from heat and the actuator on the lamp door isn't making full contact with the safety swith.
5/4/2010 10:30:12 PM •
InFocus...
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Answered
on May 04, 2010
Hi we have an infocus 4805 and had to store it
Hi,
After storage for a while one of the fans may be stuck causing the over heat safety circuit to shut down the projector. Use a bright flashlight & look in vented areas for fans & use a popsicle stick, thin plastic straw or suitable while unplugged (do not use anything metal) & give all the fans you see a little push to turn them around some. Also remove the lamp cover & remove the lamp & push the cooling fan inside the lamp compartment to loosen it up. Put the lamp back in & replace the cover & then plug it back in, wait 5 minutes then try starting it up again.
Just one of many things that can be wrong but worth a try. Good Luck,
Jim
1/20/2010 2:06:26 PM •
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Answered
on Jan 20, 2010
Won't power up
if there are no led lit, replace the power supply.
1/7/2010 1:28:06 PM •
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Answered
on Jan 07, 2010
Infocus LP540
I haven't serviced an infocus projector before, But I have seen 3 or 4 Red cutting out display simptoms on projectors caused by bent or pushed in gold pins on the VGA leads. (it always seems to be red!) I won't comment on insides but do check this basic tip before delving in too deep. Good Luck
1/7/2010 9:50:32 AM •
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Answered
on Jan 07, 2010
Infocus LP540 --- display
Hello,
It sounds like you may be feeding it with an HDMI source using an HDMI to M1-D adapter...
If this is the case, make sure the source in not set to a resolution higher than 720p.
However I really need more information to offer a definitive solution.
Take Care!
12/29/2009 11:29:44 PM •
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Answered
on Dec 29, 2009
LP540 INFOCUS
good luck. not even the infocus authorized service centers get those. besides, they were made by another company that does not make power supplies antmore. and infocus doesn't have any new ones in stock. if you're getting no power at all, replace the mosfets. it works half of the time.
12/29/2009 11:09:11 PM •
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Answered
on Dec 29, 2009
Ballast issue on LP640
first off, many churches and schools hang their projectors from the ceiling, and the only time they take them down is when they don't work. it sounds rational, but it gets dusty up there, and without proper and relatively frequent cleaning, the dust builds up and the projector can't release the heat properly. this causes a lot of malfunctions. the ballast is only one of them.
to replace the ballast:
make sure you can get the part from infocus or an authorized service center. it's part # 525-0085-51. after you remove the cover (4 screws on the bottom. you'll need a T10 torx driver. slowly slide the top forward and lift off), gently remove the ribbon cable by sliding the cable locks (on both sides of the cable) towards the front and pulling the cable out. the ballast is at the front of the projector next to the lens and in front of the lamp. pull it out and remove the ballast from it's housing. there are 3 cables coming off- the power plug, the lamp plug, and the lamp enable plug. remove those and replace the ballast. reverse the steps to install.
8/15/2009 1:35:05 AM •
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Answered
on Aug 15, 2009
InFocus LP540 Power Supply Problem
most of infocus parts are oem and made by a company in taiwan that no longer makes power supplies, and many of the parts have their stock numbers and not neccesarily a common stock. the power supply, however, is in stock at infocus for about $65.
7/17/2009 3:41:36 PM •
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Answered
on Jul 17, 2009
I HAVE INFOCUS LP600 PROJECTOR
Replace 4, 100 mfd capactor and 1 4.7mfd capactor. on the power supply board, if still nedd help call me at 408 685-7901
thanks
Shakeel
3/3/2009 12:33:46 AM •
InFocus...
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Answered
on Mar 03, 2009
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