Question about Sony KV-36XBR450 36" TV

1 Answer

Picture bowing up in middle

While watching straight lines like the sat. guide the picture is bowed up in the middle. anout 3/8" at the bottom and 1/4" at the top. Is there an adjustment in the back for this and can I do it myself? I do have alot of video savy as I build computers and have fixed some TVs before.

Thanks

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  • Dirtys Apr 25, 2008

    Thank you. Since there is not a simple adjustment to fix the problem, checking caps and repairing such a problem is something I would not tackle by myself. But the info is important so when I call the repair shop I can describe the problem correctly. Pin Amp Distortion.





    D

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The most common cause for this are electrolytic capacitors in the pinn amp and scan amplifiers going out of spec with age and use. It is more rare, but it is still possible have other support components go defective in these areas. This fault is refered to as pin amp distortion.

I have repaired many of this type of problem over the years.

If you decide to troubleshoot this yourself, take care about the high voltages employed in the TV set.


Jerry G.

Posted on Apr 25, 2008

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1 Answer

Tv turns on. There is a picture but it looks like your looking through a fish bowl. Bowes into the middle from both sides. It also looks 3D. Any Clue??


This is usually a convergence problem, although the bowing normally is from the top and bottom rather than from the sides. There may also be an issue with the pioncushion circuit that causes the bowing. Try the automatic convergence adjustment first. If that fails to resolve the problem, then resoldering the convergence ICs would be next followed by replacing the ICs should the resoldering fail.

If you wish to attempt the repair, please update this and confirm the model number to be VS-60607 and I'll provide additional details.

Thanks,
Dan

Dec 08, 2009 | Mitsubishi VS-60607 TV

1 Answer

PICTURE ON TV LOOKS BENT. ALL STRAIGHT LINE ARE CURVED


In order to provide a correct dianosis and cure, I will need to know the model number and in which direction the bow occurs. Does the curve occur from the top and bottom toward the center or from the sides toward the center? There are different circuits involved in these case.

Please update this and I'll provide a solution.

Thanks,
Dan

Nov 03, 2009 | JVC Standard (CRT) Televisions

1 Answer

I have a JVC 48' widescreen tv approx. 7 - 8 yrs old. the picture is now extremely bad all of the colors seem to be out of wack and the picture bows inward toward the middle at the top and bows inward...


There's a miror or one like this might have a ''aluminium sheet'' miror.
Open the upper back cover to see what going on there, pretty sure something run out of place...

Sep 08, 2009 | Standard (CRT) Televisions

1 Answer

Screen is bowed on top and bottom.


Projection sets have two very common problems outlined below.

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. The TV can also shut down when the convergence starts to fail.

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, RCA and others.


You can more info and a DIY convergenece repair kit with instructions from TV Repair Kits using the link at the end of this article.

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

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*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.pngSOLUTION

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

Jul 13, 2009 | Samsung PCL5415R TV

1 Answer

Hitachi 51S715 white grid lines are bowed at top and picture is now bowed also


Projection sets have two very common problems outlined below.

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. The TV can also shut down when the convergence starts to fail.

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, RCA and others.


You can more info and a DIY convergenece repair kit with instructions from TV Repair Kits using the link at the end of this article.

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

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*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.pngSOLUTION

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

Jul 12, 2009 | Hitachi 43FDX01B TV

1 Answer

Picture bows in towards middle


YOU HAVE A ALIGNMENT PROBLEM, ON YOUR BOW OR PINCUSION, OR A BAD RESISTOR, THE COLORS NOT LINING UP COULD BE A CONVERGENCE PROBLEM. I ADVISE YOU TO LET A EXPERT TO THIS DUE TO THE HIGH VOLATE ON THE CRT(PICTURE TUBE)

Jun 07, 2009 | RCA Standard (CRT) Televisions

1 Answer

BOWED IN SCREEN/PICTURE


the problem is called pincushion

usually fixable not by anyone without electronics background

guessing around $150 you have to decide
as long as it has a good clear sharp picture its worth it

Dec 20, 2008 | Sony FD Trinitron WEGA KV-24FS100 24" TV

1 Answer

Slight bowing of picture


Only on newer TV's, yours (I dont think)has the adjustment, if it does it would be in the menu area.

Apr 22, 2008 | Sony KV-36XBR450 36" TV

1 Answer

Bow like image


You likely have bad convergence output ic's type #STK392-570.  These can be purchased at UED 800-648-6657.  You will need to remove the board they are mounted on to be able to usolder the old ones and resolder the new ones.  These will be mounted on heat sinks.

Sep 08, 2007 | Mitsubishi WS-65819 TV

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