Question about Projection Televisions

Open Question

Green blob on screen projector

I have a infocus lp820 projector that has a green blob in center of screen when using.

Posted by on

6 Suggested Answers

Mark_Webber
  • 472 Answers

SOURCE: Infocus LP820 - Turns on for 30sec then shuts down

This could be one of two problems I have seen with another model Infocus projector (they are very good projectors though)

The first is the video input. Make sure it is attached correctly at both ends of the cable.
The second, remove the dust covers and blow them out. The problem can arrise if the temperature sensor detects the air inside the unit is getting too hot. If you can see the sensor when the dust covers are off (it will look like a little lump of goo on the end of a wire) then just give it a wipe as well. If dust settles on those it can cause incorrect temps to be reported.

Hope that solves your poblem =)

Posted on Apr 11, 2008

  • 1 Answer

SOURCE: infocus lite pro 720

Sounds like the LCD inside is dying and you're losing pixels. Bummer.

Posted on Sep 26, 2008

  • 1 Answer

SOURCE: hey there, lp820 user

No I was never able to come to a resolution for this projector.  My next step was to buy a new bulb but I haven't gotten around to that since I already have another projector that works.  If you do buy a new bulb, let me know if that fixes the problem.  The only other thing I've heard it mind be was a memory problem or the temperature sensor...  good luck

Posted on Nov 17, 2008

humanman42
  • 82 Answers

SOURCE: Hello, I have a NEC NP1000

If there is a reset to factory default, try that. Seems like some setting for screen zoom, or height/width adjustment got tinkered with.

Posted on Dec 02, 2008

xCAUSALITYx
  • 210 Answers

SOURCE: PS3 to Infocus LP 350 projector using HDMI

Hi,

M1-DA is a type of DVI connection that produces both analogue and digital signals, the easiest and most quality source cable for you to get is a HDMI to M1-DA cable which is now widely available for purchase.

Infocus should have included this cable in with your projector, but instead the power at bee decided to put a M1-DA to DVI-D cable instead when most visual devices now support HDMI and not DVI nowadays.

Thanks

Posted on Sep 05, 2009

  • 2 Answers

SOURCE: lp820 infocus will not turn on

Some capasitors should be changed in the powersupply and several diodes too, may be. There are temperature mode in the power supply is very hard and those capasitors broke from that. Therefore running of projector is not stable. However if dont change capasitors at time then one diode may be broken and the projector will not start afterthat alwase.
Its not so big work for repaire.
I hope may english is understandable for you.
Best regards. Sergei82@gmail.com

Posted on Dec 13, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Message says airfow blocked, turns on for about a minute then shuts off


1. Remove the air intake filters on your DLP projector. As explained by InFocus, a manufacturer of LCD and DLP projectors, each DLP model will house the air filters in a different location. However, for most DLP projector products, the filters are accessible by unclipping a simple plastic latch.

2. Wipe the air filters with a small cloth dipped in rubbing alcohol.

3. Blow compressed air into the unit's vents. This will force some internal dust out of the DLP projector, but you may still need to open up the unit for additional dust removal.

4. Unsnap the main cover from your DLP projector. Because DLP projectors need periodic lamp replacement, the main cover is rarely secured with screws or bolts. However, if the DLP projector's cover does not snap off, then you'll want to inspect the unit for possible screws or an alternate release latch.

5. Reach in and remove visible dust globs with a paper towel. Be careful to avoid touching the lens, as fingerprint smudges can diminish DLP projector image quality. If you accidentally smudge the lens while picking out dust blobs, wipe the lens with a dry, lint-free microfiber cloth.

6. Spray compressed air into your DLP projector to remove any lingering dust particles.

7. Close up the projector and reattach the filters.


Sep 26, 2011 | Mitsubishi WD-65C9 65" DLP HDTV

1 Answer

Green screen


If the lines you see are retrace lines, It means that the 200VDC are missing and not getting all the way to the video amplifier assemblies.
Did you touch the screen control settings by any chance before you replace the HV splitter?

Apr 14, 2008 | Proscan PS60690 60" Rear Projection...

1 Answer

Too Much Green


Please check out this link for manufacturer information:

http://www.infocus.com/support/Products/Projectors/LP240.aspx

Jan 10, 2008 | Projection Televisions

1 Answer

I have this blob discoloration that is in the center of my screen. what could this be its a yellowish green color


Yellowish green colour is usually caused by a burnt blue LCD Panel or the light engine requires servicing.

Jan 15, 2011 | Zenith E44W46LCD 44" Rear Projection...

1 Answer

Left half of picture has a green ghost like shade


The sounds like the light engine is bad. Sony is notorious for blobs because of the three LCD chip inside consisting of a red, green, and blue chip. The light from the lamp is reflected and then combined back together to form a brilliant picture. Unfortunately one of the chips is bad, or has melted due to extreme heat from the lamps. This can cause the color blobs on the screen. A lot of people experience blue or green blobs in the center or on the sides of their sets.

Feb 04, 2010 | Sony KP-61S70 61" Rear Projection...

1 Answer

There is a shadow in the upper left corner of the screen


someone is going to have to look inside by either removing the rear upper part of the set or removing the entire front screen---neither is easy to do. But considering your trouble I would not be surprised if the mirror is cracked---the entire front screens would have to be removed to replace the mirror--special mirror and special handling--I have seen several break when someone is not careful putting in.

Aug 22, 2009 | Projection Televisions

1 Answer

Infocus X1a LONG startup times


Sounds like the power supply is weak if it has to run for awhile before it functions. The control board could also be the issue. Does it make any grinding or buzzing noises?

Jul 18, 2009 | InFocus Projection Televisions

1 Answer

Hitachi dlp - 52" . neon blobs


Hi, the convergence chips on the board are showing signs of failure. simply replacing the board will fix this issue.(convergence board failure)

May 14, 2009 | Hitachi Projection Televisions

1 Answer

Projector emitting sparks


the ballast blew and needs replacing. if it was the power supply, the led wouldn't be on.

Jan 01, 2009 | InFocus (HW-HTSCREEN76) 76" 16:9 Projector...

Not finding what you are looking for?
Projection Televisions Logo

Related Topics:

87 people viewed this question

Ask a Question

Usually answered in minutes!

Top Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

yadayada
yadayada

Level 3 Expert

60541 Answers

Are you a Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...