Question about Samsung PCN5425R 54" Rear Projection Television

3 Answers

My samsung rear projecter has sound but no picture.

The color tubes are lighting up on the bottom of tubes but no light coming thur the lenses.

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  • john_hegedus Dec 24, 2008

    classyexpert posted the problem was the(ot crt) dose anyone have laymen terms on whats wrong.

  • john_hegedus Dec 28, 2008

    does any one know what a ot crt is and where do i locate it

  • john_hegedus Dec 31, 2008

    My samsung pcl5415r has sound but no picture. have replaced the red tube, all tubes lightup on the bottom but no light or anything coming thur the lenses. what is a ot crt? and where is this located? when answer my question explan and give location. than you

  • john_hegedus Dec 31, 2008

    thank you is the sub-deflection board the same as ballast ? sub deflecter is middle board.

  • john_hegedus Dec 31, 2008

    thank you is the sub-deflection board the same as ballast ? sub deflecter is middle board.

  • john_hegedus Dec 31, 2008

    thank you is the sub-deflection board the same as ballast ? sub deflecter is middle board.

  • john_hegedus Dec 31, 2008

    thank you is the sub-deflection board the same as ballast ? sub deflecter is middle board.

  • john_hegedus Dec 31, 2008

    thank you is the sub-deflection board the same as ballast ? sub deflecter is middle board.

  • john_hegedus Dec 31, 2008

    thank you is the sub-deflection board the same as ballast ? sub deflecter is middle board.

  • john_hegedus Dec 31, 2008

    is the ballast board the same as the sub-deflecter board? or where is it located? 1,2,3, boards looking from back, #2 is sub- deflecter

  • john_hegedus Dec 31, 2008

    is the ballast board the same as the sub -deflecter board? where is it located 1,2,3 boards looking from back. is the CRT the tubes

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3 Answers

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  • Master
  • 2,267 Answers

These rear projection TVs don't have a ballast.
The video boards are connected to the CRTs to provide high voltage and video info to the CRTs.
If not video is present but the CRTs are lighting up then is more likely a high voltage failure. The part that might be defective is the high voltage block that distributes power to all the CRTs..

Posted on Dec 31, 2008

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  • Samsung Master
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Have the ballast boards that powers up the tubes checked, otherwise one of the CRT is faulty.

Posted on Dec 23, 2008

  • Ginko
    Ginko Dec 31, 2008

    What is often called ballast boards , are small high voltage board that connect to CRTs, they are called ballasts even if they are different from a traditional ballast. The CRTs are the tubes.

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  • Expert
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Its the problem ot crt and needs reparing.to make it proper. thanks.

Posted on Dec 23, 2008

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1 Answer

Tv gets light blueand stays that way...comes back to perfect color the back to blue X-RAy looking it is a samsung pcl545r


Behind the screen, there are three color tubes: Red Green and Blue.

Unfortunately, rear projection screens often have these problems and the tubes do go out after extended use.

Take the television to a TV Repair shop to have this fixed. But in the long run, this may end up costing you a lot more than if you would purchase a new TV. The light tubes are fairly expensive.

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We are using the 55 rear tv to display our logo for a talk show.


I assume you purchased the tv in the current condition you are describing. Philips are notorious for having cloudy glyconol coolant. The coolant is situated in a chamber between the light tubes and the lenses and is required in order to keep the tubes running cool or they would otherwise crack from the excessive heat from the light tubes. The coolant normally becomes corrupted in the blue tube first, with the red and green tubes following closely behind it. The Video that is able to project through the cloudy coolant causes a picture that is washed out, fuzzy, and can even cause rainbowy colors depending on how many chambers are cloudy.

If you want further proof that the glyconol is corrupted, you can have someone remove the rear cover and take off the lenses from the light tubes so you can see directly into the coolant chambers to determine which ones are cloudy. Replacing the coolant is an involved process. You should attempt to return the tv to the sales person for a full refund if possible and explain the tv is not okay as he said.

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either your tube lenses are dirty or your focus control is bad.

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This sounds similar to the same problem I had with my TV. I went out and purchased a new light thinking it was the source of the problem, but I was wrong. It turns out the color wheel and fan went bad and it cost roughly $575.00 for the parts and labor to fix it. My tv was the hlr6167w

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Yes,try cleaning your mirror inside of tv they do get real dirty, also clean dirt off of tube lenses there are 3 of them red,green,blue. these are your picture tubes. Thank You for using FixYa and Have a nice Day.

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