Question about Panasonic PT L720U Multimedia Projector

2 Answers

Dark (brown-yellow) area on the screen

I looks as if there is a big yellowish brown blob in the middle of the picture you can see through it but the picture is tinted that color.

Posted by on

  • 2 more comments 
  • Dale Nelson Jun 17, 2007

    This site blows ass!!

  • Dale Nelson Jul 05, 2007

    Has there ever been a question answered?

    P.S. This site sucks shit!

  • Dale Nelson Jul 20, 2007

    Keep on sucking!!

  • Anonymous Feb 20, 2009

    I have the same problem. I swapped lamps with a good projector and the problem did not go away so it's not the lamp. I think one of the LCD panels is going bad. There are 3 panels and each one costs about $400, if you can get it from Panasonic.

×

Ad

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

I have found what causes this problem, there is a red filter before the transparent lcd. Mine was burned and displaying the colors your are describing.

You need to take the cover off and then you will need to take the circuit board off. Where you see the 3 ribbons cables is the area that's causing this problem.

You will see a tiny screw from the top, unscrew it and remove the red filter, it should be on the ribbon cable with a blue dot. You will probably see that this color filter on the glass has been burnt.

So I thought I could order some heat resistant gel swatches used in theater lighting to correct the color. However these heat resistant swatches are not really heat reisistant. I found that the plane red color worked best but after about 30 seconds it started to discolor the filter I placed in.

So now I'm looking at trying to located a service manual for this.

Posted on Apr 06, 2010

  • David Sitzes Aug 15, 2012

    I have the same problem...did you ever find a solution to this?

×

Ad

Dalnel97,
Did you ever find a solution to your yellowish brown blob? I have the same problem with mine here at work.

Posted on Feb 28, 2008

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have the Sony KDS- 60A2020 60 inch TV. Recently, my picture has appeared more yellowish. Everyone on it looks like there dark yellowish or have fairly dark (bronze) sun tans. I changed my lamp yesterday...


I have a older 2006 SXRD rear projection TV. I had the same problem after the TV warmed up this yellow tint started in the corner and crawled its way down the TV. It turned out that Sony had a recall on the optic block of the TV. If you replaced the Lamp and adjusted the color this kinda sounds like the same problem. Here is a link explaining it. In this article it shows up as a green haze and blob, but in my TV it manifested as a yellow tint.
http://www.avsforum.com/avs-vb/showthread.php?t=1086180

Jun 09, 2011 | Sony KDS-60A2020 60" HDTV

3 Answers

Image


It maybe a filter problem go through the steps you took when installing the new bulb and check all then test.

Thanks J

Feb 03, 2008 | Toshiba TLP S30 Multimedia Projector

1 Answer

Adjusting to the proper color


Tint would be the control that will control the color balance, but this sounds like it may be deeper then that. Turn your color all the way down so that you have a black and whit picture. If the picture is still yellow then you have a problem with the blue picture tube.

Feb 02, 2009 | Philips 43PP9202 43" Rear Projection...

1 Answer

Panasonic 56" projection color problems


there are so many technologies for the projection tv's ever one has their own caracteristic faults with out you mention the technoligy used on your tv will be deficult to help you but assuming is a lcd projection you must have a problem with the optical block the repair will be expesive if you do not have a manufactuer warranty for it

Jan 19, 2009 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Blue colors appear greenish in middle third of screen...there is a circle of yellowish green in the center of the screen


You have a bad optical block, the block has a 2 year warrnty but you will have to pay labor to have a tech change it

Aug 08, 2008 | Sony KDF-E50A10 50 in. LCD HDTV

1 Answer

White colors schemes seem off white color or brownish color and blue has green tint or baby blue color. .


Check the coolant in all three crt's as chances are it is contaminated (should be crystal clear). If brown (beer color), replace coolant in all three crt's and perform convergence adjust. Picture should be like new!!!

Good Luck!!!

Jul 20, 2008 | Akai PT5598HD 55" Rear Projection...

1 Answer

Yellowish tint on JVC Rear projection TV


I found out it was a bad light engine. The repair cost is $1,700. I'm glad it's still under warranty.

Apr 10, 2008 | Televison & Video

1 Answer

Sanyo 5.0 megpi( yellow tint)


yellowish color is due to the light your flash gives when taking pictures. i suggest you bring that to a service center and let them take a look at your camera...probably needs a bulb replacement.

Jan 26, 2008 | Sanyo Xacti DSC-S4 / VPC-S4 Digital Camera

1 Answer

Yellowish color


turn off the color and see if you have a good grey picture if not your grey scale is off and requires adjustment

Aug 26, 2007 | Hitachi 43F300 43" Rear Projection...

Not finding what you are looking for?
Panasonic PT L720U Multimedia Projector Logo

430 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Office Equipment & Supplies Experts

Norman  J Weimar Jr
Norman J Weimar Jr

Level 3 Expert

6825 Answers

HEMANT GROVER

Level 2 Expert

171 Answers

mahesh y.h
mahesh y.h

Level 2 Expert

151 Answers

Are you a Panasonic Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...