Question about Zenith R40W46 40" Rear Projection HDTV-Ready Television

2 Answers

Picture shrinking top & bottem

The picture seems to be bowed at the top and bottem of the screen. this makes convergence impossible to line up. Im a clinical engineer that does x-ray repair and other electronic medical equipment but tv is not my forte' is this a hv problem?

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Zenith Master
  • 3,459 Answers

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projeciton sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some photos of convergence problems.

picture shrinking top & bottem - 42d3683.jpg

7859b01.jpg

Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix ipicture shrinking top & bottem - 69189a5.pngw for a fix

69189a5.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

Posted on Jun 06, 2010

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Filmmaker:

    Uploaded 5 video answers.

  • Expert
  • 162 Answers

I have a philips magnavox and had two problems that I recently fixed using kits from www.TvRepairKits.com. I can't say enough about their kits and help. Without them I would have never been able to fix my TV set myself.

The first problem I had was the TV was looking 3D. After doing some homework I found out that this is a convergence problem. I bought a kit, followed the instructions, and to my amazement fixed it myself.

After building my confidence with the 1st repair I decided to get their CRT fluid kit. This kit fixes the dull video,red video, or bright/halo looking video. If you have a magmavox set that is more than 5 years old your tv has this problem already. It happens on every set. As before I bought the kit, followed the instructions, and now my video looks factory new. Once again I wanted to say thanks to the team at Tv Repair Kits for putting together kits that the average joe can use.

ML

Posted on Aug 09, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

On my HD1080 Mitsubishi projection flat screen the picture is bowed on top and bottem and it look as if the projectors themselves are offset, but the picture is clearer as you come toward the center. If I...


You have poor contacts and or dry joints. Resoldering on the convergeance panel and powersupply/line timebase board will probably fix it.
It should take less than an hour in labour terms.

Feb 20, 2011 | Mitsubishi WS-65809 65" Rear Projection...

3 Answers

Screen lookes like colores separating


Here's all I find regarding bad convergence from the techrepairCD:
RCA ~ITC222 D52W20~Convergence bad~~~ITC222~Replace leaky DL032 on
deflection board~~~~~~

RCA~D52W20Y ATC221~Convergence goes out/bowed after on for a few
minutes~~~ATC221~Problem may be on the deflection board. Was unable to
pinpoint where in this case.~~~~~~

RCA~D52W20BYX1 ITC222~Convergence way off after replacing small signal
board~EEPROMS were transferred over to new board~~~IK210 was
defective..transfer the new EEPROM back over.~Remember on these
sets*when replacing the SSB* if there is a small P on corner of
screen*hold volume on remote for 8 seconds after it reaches minimum.~~~~~

RCA~D52W20BYX1 ITC222~Can not align blue convergence* bottom really
bowed* possibly either color after replacing SSB.(Or no auto
convergence.~(Service menu: turn power off for 30 seconds* press vol dn
and ch dn* simultaneously for 8 seconds* set turns on with service menu
options)~~ITC222~In service menu* select convergence. If sensor
calibration was performed when convergence was too far off* it will not
alighn.~Get crosshatch with straight lines* perform sensor calibration*
then attempt convergence alignment again. Be sure to store settings*
then do sensor calibration again.~You must get a green flash of the
screen after sensor cal and a check in the box. RED flash indicated
convergence settings are too far off~~~~

RCA~D52W20BYX1 ITC222~no convergence correction~~~ITC222~LP650
(259271) DP670 (259246) & RP632 (259564) 4.7 3W on convergence power
supply board~~~~~~

Oct 28, 2008 | RCA R52WM24 52" HDTV Projection Television

1 Answer

The picture shrinked and the colors are one on top of other


Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg
69189a5.pngCONVERGENCE SOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jan 12, 2011 | Hitachi Projection Televisions

1 Answer

There is a red outline that seems to slide and the picture bows


Projection sets have two very common problems.

The first common problem is convergence


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

May 28, 2010 | Apex Digital GB4308 43" Rear Projection...

1 Answer

Lines are bowed at top and bottom,picture is blurry


Is the convergence option still listed under the on screen menu setup options, or has it disappeared?

Jan 22, 2010 | RCA R52WH76 Television

1 Answer

Screen has a double image. looks like the green


Convergence is the problem. I just fixed my set myself with a kit from TvRepairKits.com

Nov 16, 2009 | Hitachi 50UX58B 50" Rear Projection...

1 Answer

Pt-47wx49e convergence problem


I just replaced the 2 convergance chips, but it did not seem to fix the problem. I then tested all the resistors that feed the convergence chips anf there was a 2.2 ohm fusable blown. IT was R7050 on mine. That seemed to fix it so that I could adjust all the colors through the convergence 2 screen. There seems to be a slight bow near the bottom when you look at the c2 screen, but not noticable when you are watching a picture. Since I got this broken, I am not sure how perfect it should be.

If anyone can send me the service manual, I would appretiate it. Thanks.

Oct 10, 2008 | Panasonic PT-47WX49 47" Rear Projection...

2 Answers

60" TV has an arc in the pic


Check the fuses 1007 & 1405. If they are blown in will cause an Arc.  

Note: If the screen shrinks/expands you may need a chip kit from www.repairkits.com


Aug 28, 2008 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Philips 9p5034c101 rear projection.chassis#ptv 835


Just replace the two STK392-110 Convergence ICs and that will correct the convergence. The small pic if its centerd in the center of the screen is usually caused by the opto-couplers being bad

May 18, 2008 | Philips 9P5034C 50" Rear Projection...

Not finding what you are looking for?
Zenith R40W46 40" Rear Projection HDTV-Ready Television Logo

91 people viewed this question

Ask a Question

Usually answered in minutes!

Top Zenith Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

yadayada
yadayada

Level 3 Expert

61249 Answers

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

Answer questions

Manuals & User Guides

Loading...