Question about Televison & Video

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I wonder if you can give some advice. Please. I have a Samsung DLP HLT5076S that is 3 1/2 years old. I replaced the lamp in November 2010 from a bulb site on line because I had no picture and three flashing lights. After reading several forums this seemed the solution. After that seemed to work well. However, shortly thereafter I began to hear a very slight buzzing noise. So I researched that and most things pointed to color wheel. I didn't hear the high pitch whining though just a slight buzz. Long story short, I ignored the buzzing because the TV still worked. Last week picture became noticeably darker and when I turned it on and it cycled through trying to go twice, then came on. Next time I wasn't so lucky. It cycled through about 3 times and went right to the flashing 3 lights. I tried to unplug for reset no luck, just kept cycling only to flash 3. I took off back of TV did a superb cleaning job of all dust. Taped light switch to see what was going on in there... as it began cycling I saw the lamp flash as if trying to come on, all fans spun. There is no broken glass by color wheel. The buzzing sound is not coming from area where lamp or fans are. It is coming from upper middle, not from where I removed backing. I used a stethoscope to pinpoint. I have no idea what to do with this television. I have now bought a new LCD. I am unsure if I should scrap this expensive fairly new DLP or try to repair. I hate to spend money on "I don't knows" Anyone with experience with these have any advice. So far I have been told it may be a ballast or circuit board with later costing $500 or more to fix.

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  • 3 more comments 
  • tyais75 Mar 28, 2011

    I purchased the lamp from bulbsolutions.com for $99. It appears to be replacement one not OME. I purchased the lamp only and using a glove installed it into the tv's original housing.
    While I understand what your saying about the after market bulb, to me the buzzing sound in the upper middle of the tv seems irrelevant to bulb? (although buzzing sound came immediately after I replaced bulb)
    Could an after market lamp have caused another issue with a different part creating the buzzing?
    What is the buzzing sound? (I've read somewhere something about a circuit board)

    I appreciate your professional advice.
    tyais75@gmail.com

  • tyais75 Mar 28, 2011

    Buzzing sound can come from ballast supply as it generates high voltage
    for lamp to make spark between lamp electrodes to generate high bright
    light for light engine to project its image on tv front screen.
    Lamp
    current consumption is monitored and protection circuit activates and
    shut down tv with blinking lights on front if lamp current consumption
    exceeds the limit set by manufacturer. Bare bulb does not last longer
    that is why tv is giving you problem, replace Samsung original lamp that
    comes with casing and meets the standard to solve tv problem.
    Hope this info will help.
    Thanks.

    Ok one more followup. I find this TV fascinating....lol I am reluctant to put another dime into this TV without being somewhat certain that will just the bulb and not more.

    What I think you are saying is because I replaced the lamp with a cheaper aftermarket one and even though I installed it into the original lamp casing it has caused the ballast to overwork creating the buzzing sound. Despite that it ran like in that condition for several months eventually it caused the circuit to activate and shut down because the current exceeded manufacturers limit?

    So my question would be why did it take so long?
    And do you think it has caused another part to "break" possibly requiring me to replace more than the lamp such as..ballast or circuit board? Or do you think a new Original Samsung light bulb will likely solve the problem?

    By the way you have really been helpful in helping me understand the way this works :)

  • tyais75 Mar 28, 2011

    I contacted bulb company and they say it is an original Osram replacement bulb as indicated by Samsung for use with this DLP. Factually, immediatly after installation of this bulb tv began to buzz.
    You still think the lamp is the issue?
    Tyais

  • tyais75 Mar 28, 2011

    Ok. I do have the old lamp. I will give it try when I get home. I don't believe it can't be those other things (color wheel, fan) because they are located in bottom of tv behind removable back. I can see them and no sound from there. The sound is distinctly coming from upper middle rear enclosed section of TV. I'll let you know how I make out.

  • tyais75 May 25, 2011

    It must have been the bulb!! Sent in bulb I purchased last year to company...under warranty, sent me new one, worked like magic. Buzzing is still there...but installed original bulb, and it buzzed with that to. So maybe thats just a noise it makes. Thanks for your help!!

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  • 1,591 Answers

There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both - either can cause transformer buzz and / or inability to power up.
Any caps in these sections (or any other section for that matter) that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
If you repeatedly turn it on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't.
Sometimes you have to do the opposite to start it up and unplug it for a long time and then try.

If you aren't tech savvy, read this to the end and watch the videos.

If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering, and even then, you should go OVER, not under the uF rating).

Most of the caps that go are 10V 1000uF or 3300uF.

I found some great videos of the procedure (for many Samsungs with the same issue) on youtube.
http://www.youtube.com/watch?v=Mm51C_RDIZE
I wonder if you can - utube.png You-Tube video "Mm51C_RDIZE" placeholder

http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related
utube.png You-Tube video "BNHHrgX_6cs&feature=related" placeholder

http://www.youtube.com/watch?v=8l0AUj8QUkg&NR=1&feature=fvwp
utube.png You-Tube video "8l0AUj8QUkg&NR=1&feature=fvwp" placeholder

http://www.youtube.com/watch?v=Y7b_nTaZYcU&feature=relatedI wonder if you can - utube.pngg src="http://i.fixya.net/uploads/images/utube.png" alt="utube.png" class="h_mi" /> You-Tube video "Y7b_nTaZYcU&feature=related" placeholder

As you can see, this issue spans plasma TVs, as well as large and small LCD TVs and monitors.
The parts are cheap, and skill required is minimal.
The girl in the third video had never soldered before - didn't even have a soldering iron when she started making the video - and even she was able to do this repair!

Posted on Mar 28, 2011

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Hi,
Let me know about replaced lamp that was replaced last year, was it Samsung original or some low price bulb that installs in old lamp casing?
Apparently lamp seems bad and causing problem. Samsung original lamp is available for $140 in Samsung Part Store
Hope this will help.
Thanks.

Posted on Mar 27, 2011

  • 2 more comments 
  • Shahid Electronics
    Shahid Electronics Mar 28, 2011

    Buzzing sound can come from ballast supply as it generates high voltage for lamp to make spark between lamp electrodes to generate high bright light for light engine to project its image on tv front screen.
    Lamp current consumption is monitored and protection circuit activates and shut down tv with blinking lights on front if lamp current consumption exceeds the limit set by manufacturer. Bare bulb does not last longer that is why tv is giving you problem, replace Samsung original lamp that comes with casing and meets the standard to solve tv problem.
    Hope this info will help.
    Thanks.

  • Shahid Electronics
    Shahid Electronics Mar 28, 2011

    In my opinion, ballast supply board and rest of tv is just fine, original Samsung lamp replacement will solve tv problem.
    Thanks.

  • Shahid Electronics
    Shahid Electronics Mar 28, 2011

    Lets check buzz sound, put old lamp in tv if you have it and turn On tv. Do you get buzz sound?
    As I explained earlier, buzz sound comes from ballast supply and other parts that can produce noise are color wheel and exhaust fan in tv.
    Thanks.

  • Shahid Electronics
    Shahid Electronics Mar 28, 2011

    OK, no problem, take your time.

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