Question about Samsung HLN467W 46" Rear Projection HDTV

3 Answers

TV won't turn on - "lamp" LED flashes

I need verification - a previous tech said I had an IC failure. I need to know which board to replace.

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  • anthony777 Sep 06, 2008

    Thanks for your assistance. I tried step 1 and saw the "TIMER" LED flashing on the front of the set, but now power. Already tried step 2. I will work on step 3. I make a visual inspection of the boards to see if I could see any fractures on soldering joints, but saw nothing suspect.
    Can I be reasonably assured that the main ANALOG board is bad? Or might it be the small board (filter?) attached sideways on the side of the set?


  • anthony777 Sep 06, 2008

    Not any response after step 3 either. Where would I look first for bad caps? Is there a voltage I should be looking for into the analog board?

  • anthony777 Sep 06, 2008

    I am all for the long term solution. When you are referring to the "power board" which board do you mean? I have a board labeled "speakers" and a board labeled "main" (which also has all analog inputs) and a very small board to the left (looking from rear of set).

  • anthony777 Sep 06, 2008

    Sorry, I cannot remember the tech's name - was at work when I did the chat. I thought it would be on my profile, but isn't there.
    The "LAMP" LED flashes only twice.


  • anthony777 Sep 06, 2008

    Regardless of whether I use the remote or the power switch on the side, I can hear the relay turn on to power up, but don't hear the startup chime. The "LAMP" LED flashes twice and then I hear the relay open again.


  • anthony777 Sep 06, 2008

    I have opened the cabinet to see if any cables were loose/disconnected, without any success.

  • anthony777 Sep 06, 2008

    I only see two flashes of the one LED (lamp) - this means the bulb is bad?
    Is there any other check I can do on the bulb before I purchase a new one?
    What is the possibility the ballast is bad instead?


  • anthony777 Sep 06, 2008

    I ordered a lamp. Not sure how to put the TV in standby mode - didn't see it in the manual.

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3 Answers

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  • Master
  • 2,712 Answers

1. Try this - hold the menu button down for 10 seconds. TV should power up; youwill have to turn off front panel buttons on menu.

2. You can also try a hard reset: Unplug TV from AC mains and remove all cablesfrom TV. Wait about 30 minutes and replug to AC power and redo the cabling.Switch on the TV and see if it works..

3. Powering down the set or putting it in standby may haveallowed the power supply to cool. Weak capacitors often go out of spec whenthey cool, thus preventing a section of the power supply from firing upproperly again. There is a simple trick...just warm the back of the TV with ahair dryer for 5-7 mins after you have unplugged the TV. Look for the littleareas of holes in the back panel of TV. Use these as your guide at where to usethe hairdryer, but don't hold the dryer too close (say 5-6inches away). (Makesure the dryer is on High heat). If the TV doesn't turn on after you haveheated it up (like it tries to come on but then turns off) you need to unplugthe TV again, this resets it. And repeat those steps till it works. Resettingthe TV after it fails to turn on is the key. Also, just leave the TV on. Don'tturn in off. Since it is LCD, it doesn't take much power...only a few bucksextra a month for your utility bill.

4. A circuit board may crack about some of the largercomponents mounted on it. You can inspect the PCB's for fractures, and thenrepair them. It may also be poor soldering that has failed. I would be checkingfor these things first.

5. If you want to go in for a long term solution, you can easily replace thewhole power board or just change the faulty capacitors. You will have to openthe back panel and take a look. You can make out which are faulty, becausetheir caps will be swollen on top. Here's a sample pic of a bust capacitor (notsame model):
TV won't turn on -
Check the specifications of the faulty capacitors, and get the replacementsfrom your local electronics shop. If you are comfortable with this, you can usea pair of needle nose pliers to G-E-N-T-L-Y pull out the defunct capacitors.Once that is done, solder in the new capacitors carefully. If are unsure how todo this, try to get a friend who knows how to do this kinda stuff do it foryou, or get a qualified technician. Warning: If you do nothave a background in electronics repair, or are inexperienced, get a qualifiedtechnician to do it for you.

REMEMBER there are very dangerous voltages inside a TVthat can KILL. Be sure to work SAFE when dealing with electricity. DISCONNECTTHE POWER BEFORE YOU DO ANYTHING.

Hope that helps!

If your issue isnot resolved, please do not assign a rating just yet. Please post back asto what steps you took, results, etc, and I will try to assist you further asbest I can. I am here at your service.

P.S. - You can rate a solution with one of fourratings as explained under (remember that at times a bit of to and fro dialoguemay be necessary to resolve an issue).

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Posted on Sep 06, 2008

  • 1 more comment 
  • Swilin Sampson
    Swilin Sampson Sep 06, 2008

    Usually the faulty caps will be around the convergence IC . (This is located on a large heat sink on the main board, and will be hard to miss). However, if you find the caps here in good condition, look around the board. Like I said, you can distinguish a faulty cap from a good one by the bulge. If all caps look to be in good shape, you may have to replace either the power board or the convergence IC itself.

  • Swilin Sampson
    Swilin Sampson Sep 06, 2008

    Well, it is impossible to say if the issue is with the power board or the main board without testing it first. You can get online support to diagnose and repair your set yourself and parts as well at the following link:
    http://servicemanuals.vstore.ca/


  • Swilin Sampson
    Swilin Sampson Sep 06, 2008

    I dont think it is a faulty bulb or a problem with the ballast. Go to the link I provided..that should help you.

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  • Samsung Master
  • 13,433 Answers

The lamp would indicate that you have a faulty lamp, if you want to make completelu sure I suggest you ask slinteriors. Il get you a link to him, he has over 25years of experience in this field.

From the information that you have given me you would need to replace the lamp, which was the previous tech?

Posted on Sep 06, 2008

  • Ekse Sep 06, 2008

    This guy will give you a 100% correct answer I'm completely sure.


    http://www.fixya.com/users/slinteriors



    use the ask me button on hes profile and use the free option, otherwice you may get a answer from another expert.

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  • Samsung Master
  • 19,396 Answers

Depends on how many times the led flashes, who was the tech?

Posted on Sep 06, 2008

  • 2 more comments 
  • Ginko
    Ginko Sep 06, 2008

    The expert was probably referring to the convergence IC, that is a part that easily blows, you cannot know if you do not test them.
    Describe the problem in detail and tell me how many times it flashes.


  • Ginko
    Ginko Sep 06, 2008

    3 blinks on the led on Samsung DLP is lamp problem, you have to replace the bulb.
    See the discussion here, there are also links to sellers.


  • Ginko
    Ginko Sep 06, 2008
  • Ginko
    Ginko Sep 06, 2008

    There is also a reset procedure for the lamp time counter, you can try this before replacing the lamp.

    Put the TV in standby mode.

    Using the original remote:

    Press one by one the following buttons,: Mute -1-8-2-power

    The television should turn on Service menu.
    In service mode you find Lamp Options for lamp hours count, reset it.
    If you do something wrong on service mode you can cause further troubles on your TV , be careful.



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