Question about Samsung LNT3242H Television

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Samsung LN-T3242HX LCD TV

Hi welcomejee,

Samsung LN-T3242HX lcd tv. When I first got the tv the screen would play a tone and the screen would flash blue for about one second and then go blank. I took it apart to find that one of the ccfl's had broken inside the screen. I replaced the ccfl today and now it does nothing except the red light flashes in the front. So it did light up for a second with the broken ccfl, but now not at all with the new one installed? The person that had the tv before me cut the ground wire off of the plug that goes to the wall, and when I use a new plug the power seems to be stronger on the board and not as strong with the old cord. I am trying to determine if it is a power supply issue? or if maybe it is the inverter? Can you tell me what to check to find out? If it is the power supply, do I need to buy a new board, or can I replace components? I appreciate any help or directions that you can give me! wow that is alot of questions..lol

Thank you in advance for any help!

Compgeek09

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  • compgeek09 Oct 19, 2008

    Thanks Welcomejee! I was thinking the same thing about the connector, but was not sure that I wanted to open it up again:) When I soldered the ccfl, I should have checked the connection better! The connections seemed tight? Do you know of any way to test solder joint while not hooked up, before I put it all back together? The one side of the ccfl has a wire attached and the other side connects to a small circuit board. I did check all the boards and connections, and I know they are right because I took pictures on dissasembly :) Thanks again for your help, and let me know if you think of anything else. I will keep you updated to the fix.



    Thanks,

    Compgeek09

  • compgeek09 Oct 20, 2008

    Well I opened it up again, and resoldered the ccfl where it goes into the board. Still no luck. Does the ccfl actually have to be touching the lead on the board? or would the solder carry the current if was not right up against the lead? I am almost positive that it is making connection on the board, but I am no guru at soldering techniques. Would any of the ccfls light up if that one is not making the connection? Do you know of any way to test the ccfls while they are out of the unit? Thanks for all your help!

  • compgeek09 Oct 21, 2008

    Did you get my e-mail?

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Hi Compgeek09
Please check CCFL is hooked in connector properly, all connectors of back light inverter board are plugged correctly, check also other connectors of removed boards while CCFL replaced.
It doesn't seem issue of back light inverter board nor its related to ground wire of power plug to wall because tv was working before replacement of CCFL.

Posted on Oct 19, 2008

  • Shahid Electronics
    Shahid Electronics Oct 20, 2008

    Can you post disassemble pictures of CCFL or you can email me as you already know my email address ;)
    I want to see the situation to understand whats happening there.



  • Shahid Electronics
    Shahid Electronics Oct 21, 2008

    yeah, I got your email and will reply you soon. Thanks.
    few pics are out of focus, specially solder points.


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