Question about Samsung PCN5425R 54" Rear Projection Television

1 Answer

No picture I have sound, but no picture. The picture took about five minutes before it would appear, then was very fuzzy, then would come into focus as normal. Now the picture is blank. But I am getting sound. TV was functioning normally before this problem.

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  • Twiggy Moonshoes
    Twiggy Moonshoes May 13, 2008

    the sticker with the model number is torn.
    The last four numbers are 5415R. Samsung website is showing either POM or PCL
    The red light blinks for about ten seconds and then goes out. It use to blink and then the set would come on. Now it blinks and then nothing.
    But the sound does work.
    I am only running a dvd player. No broadcast or cable connections. If the dvd player was not connected the screen would be blue. Now, nothing. Just blank, as if it is off. When I press the power button you can hear the power "relay" come on. And when you turn it off the same thing. You can hear the "relay"

  • Twiggy Moonshoes
    Twiggy Moonshoes May 14, 2008

    I have already tried the unplug trick.
    After several "jolts" which I tried before,
    no luck. You say lamp replacement? How many lamps are there? I what looks like three.
    By the way the model is PCL5415R.
    thanks

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  • Master
  • 1,447 Answers

Whats the exact model? are you getting a red light on the led lights on the on button? flashing or solid red? check all the connection make sure all are tightly connected from the back of your television

Posted on May 13, 2008

  • 1 more comment 
  • Edgar Allan Pagayona
    Edgar Allan Pagayona May 13, 2008

    First, try the unplug it, wait a few minutes, plug it in trick, several
    times. If that doesn't work try pressing the power button and slap the
    back left side of the set several times. Sometimes, this will shock the
    ballast and/or lamp into working. If still no luck, check the manual
    for instructions on lamp replacement and unplug, then, reseat the lamp.

  • Edgar Allan Pagayona
    Edgar Allan Pagayona May 15, 2008

    did you hear a pop before this issue occurred, because you might need to replace the bulb for your tv

  • Edgar Allan Pagayona
    Edgar Allan Pagayona May 15, 2008

    here the link for the parts

    samsung parts


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When I turn on the TV, the picture is fuzzy. After five minutes, the picture is clear but any words are out of focus even the menu for adjustments is out of focus. The convergence for red is clear but...


Hi,

Below are some troubleshooting tips for a TV that has a fuzzy or blurry picture;

If your Plasma or LCD TV picture is blurry or fuzzy there are several things that may be causing the problem. It's worth running through the following list before seeking service. You may find yourself saving the full cost of a TV repair.

Make sure you are using the appropriate cable box for your TV. If you have a high-definition TV you should also be using a high-def channel box from your cable provider. Watching standard definition channels on a high-def TV can make the picture look distorted and fuzzy.

Not all cable channels are broadcast in high-definition. When you stretch a standard definition picture to fill the full frame of your wide-screen TV it may look distorted. You can try changing your TV display settings to show standard-def channels at their native resolution. This will create black or gray bands on either side of your picture.

Ideally all of your video components will be connected to your TV with HDMI cables. Your next best option will be component video cables. If your cable box does not have HDMI capabilities, contact your cable company about upgrading your box to one that does include HDMI.

Make sure there is no glare on your TV from a window or other strong light source. This can significantly degrade the quality of the image you are watching.

If your TV has digital noise reduction, try turning that feature on.

You can adjust your TV's sharpness and picture modes to see if that improves picture quality.

Try plugging the power cord into a different electrical outlet and/or surge protector. You may be receiving electrical interference through your power cord.

Trying moving any nearby electrical devices away from the TV. They may be creating interference that can degrade the picture quality.

Let me know if the above helps or not, so that I can direct you further on what do next.....

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well this could be a power supply issue try this web site they could have the part www.discount-merchant.com
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If the colors appear to be aligned and the only isue is focus, than you can adjust the focus on the flyback transformer. Carefully remove the rear cover and locate the flyback transformer (part with large red wire coming out the top). There should be 2 controls/adjustment points on it. One is for screen and the other for focus. Try adjusting the focus using a mirror to see the front of the set. You should adjust the control back and forth a ferw times to "loosen" it up a bit before settling down to the focus point.

Update this with the results.

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Try adjusting the convergence. If it won't move see below- (or hitting Magic Focus for some Hitachi’s)

This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$400

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Fuzzy is a funny word. I never use it to describe a picture problem. That because fuzzy can go too many different ways. There is snowy fuzzy, blurry fuzzy, grainy fuzzy, and demodulated fuzzy. If the set goes out of focus intermittently that has something to do with the focus ciruitry. If it goes grainy that is a front end problem, usually tuner related. The other types of fuzzy are generally associated with problems in video processing some where. So, which is it?

Oh, and BTW that unit has three small picture tubes in it, one red, one blue, and one green. It doesn't have a 'bulb'.

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Like seeing double!


You need to replace both convergence ICs they are STK392-110. You can get replacement Ics with free instalation instructions with pictures at the following link
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