Question about Samsung PCL545R 54" Rear Projection Television

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Color convergence off and bowing effect on top and bottom of picture

Hi ,

My tv's focus of colors was off and it looked that the picture had what I would describe as a bowing effect to it. I replaced the convergence IC's believing that would be the answer to all my prayers. Not even close. Now the problem is even worse. I've tried the manual convergence from the menu settings and I can't get anything to move. Is there anything else that it could be? The fact that it's now worse makes me worry that I've done something wrong in the IC change out but everything seemed to go fine. Also read something about possible resistors blown ?????

Any and all help would be appreciated.

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Most of the samsung hdtv and lcd customers are facing the problem of the display.. either ther will be blends of colours on the screen or ther wil be no focus of colours...the exact reason for thiis cant be told until it is spot checked.... the best solution for this you should take it to a professional electrician and get it checked... it will be very gud if you stil have the warranty for this tv

Posted on Jun 01, 2008

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Yes, if you have replaced the IC's correctly (and used the correct IC specifications) then the issue could be with faulty resistors and / or capacitors.

Posted on Jun 01, 2008

  • Swilin Sampson
    Swilin Sampson Jun 01, 2008

    An easier option would be to replace the whole board. You can get one for about $85 here:
    http://www.partstore.com/Part/Samsung/Sa...

    Cheaper than a repair, and peace of mind :)


  • Swilin Sampson
    Swilin Sampson Jun 01, 2008

    Probably this link also could be useful..its a step by step guide with pics on how to replace the IC's:
    http://home.earthlink.net/~oleg.filippov...

    Also make sure that you do not use cheap clones of the IC's. They could be the cause for the issue as well. Try PANASONIC or SANYO STK392-110 chips instead..A bit more expensive, but worth it..

    PS..If you find that the information I provided was useful and helped you in any way, please take a moment to "Accept" my solution. Many thanks..


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Your description of the problem sounds like a convergence issue. You more than likely have lost the convergence ICs. They will need to be replaced and the convergence will have to be set. The green beam should not move. It is the standard which the red and green are moved to overlap. Since you have bow at the top and bottom I would replace the convergence ICs. I have a tip at http://www.fixya.com/support/r4220499-change_projection_tv_convergence_ics which explains the problem, how to replace the parts and where to get the replacement parts.

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Problem #1) Convergence

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Problem #2 CRT Fluid has clouded over. Symtoms
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bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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

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

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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....
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  • 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.

42d3683.jpg

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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 it. See below 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.

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Here are some of the most common symptoms and example photos of a convergence problem


  • 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.
Here are some photos of convergence problems.

3dc9420.jpg
645fba6.jpg
0dcec37.jpg
Here is a quick test....

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

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

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You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

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