Question about Samsung LNT3242H Television

2 Answers

My lnt3242h will not turn on. When it is plugged

My lnt3242h will not turn on. When it is plugged in the red light stays on solid. It flickers when functions on the remote are pressed but the television will not turn on. I have downloaded a service manual but cannot compare what is on the schematic diagrams to the actural pcb's in order to follow the trouble shooting guide. Any suggestions?

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  • 710smk Oct 07, 2009

    No sound at all. There is no indication that anything is functioning - the screen is black. The red light flickers as if it is receiving signal from the remote but nothing else. I do have a multimeter - the manual is on the way.

  • 710smk Oct 07, 2009

    Capacitors are not identified this way on the pcb. ie on the power supply they are like cm851, cm852 or cx801s or cy801s. Also the main pcb in my tv does not look exactly like the image - heat sinks are different - some capacitors are different etc. part# on my pcb is bn44-00155a. i have googled this number and found exact pictures but no other info.

  • 710smk Oct 07, 2009

    The model number in blue script on the side of the cover is LNT3242hx. The picture you have posted is exactly the same as the pcb in my television. The first five pins of both connectors are labeled 24v the next five are gnd. All ten pins labeled 24v have 1.247vDC. Thank you for the help.

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The problem is probably a bad power supply or shorted inverter board. Most people just swap the whole board rather than going component level. I found a power board pretty cheap on Ebay: http://cgi.ebay.com/Samsung-LCD-Power-Suppy-BN44-00156A-LNT32-5-Models!_W0QQitemZ120455726458QQcmdZViewItem, and a really cheap inverter board: http://www.pchub.com/uph/model/0--11344-0-1/HS320WV12-parts.html

Those are the two most often failed parts.

Posted on Oct 08, 2009

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Do you get sound of TV programs, can you change volume level while screen is black? Let me know to find out possible cause of problem and service manual will help me to guide you properly. Email manual copy at welcomejee@yahoo.com and let me know do you have multimeter to test/ measure output volts on power supply board? Thanks.

Posted on Oct 07, 2009

  • 1 more comment 
  • Shahid Electronics
    Shahid Electronics Oct 07, 2009

    No sound at all. There is no indication that anything is functioning -
    the screen is black. The red light flickers as if it is receiving
    signal from the remote but nothing else. I do have a multimeter - the
    manual is on the way.
    ======================================================================

    Thanks for schematics, Please check 13V volts at capacitor C103,,, 5 volts at C113 and 12 volts at C117 on power supply board. All above capacitors (Cxxx) are mounted on power supply board.
    Power supply board LN-T3242H image is shown below taken from service manual.
    Please go through Troubleshooting chart (no power) in service manual that has few steps to confirm either power supply board is working or need to be replaced.
    Thanks.





  • Shahid Electronics
    Shahid Electronics Oct 07, 2009

    Capacitors are not identified this way on the pcb. ie on the power
    supply they are like cm851, cm852 or cx801s or cy801s. Also the main
    pcb in my tv does not look exactly like the image - heat sinks are
    different - some capacitors are different etc. part# on my pcb is
    bn44-00155a. i have googled this number and found exact pictures but no
    other info.
    ===============================================================

    Is it Samsung LN-T3242H TV? above image is taken from service manual.

    BN44-00155A image is similar at Part Store.
    Can you please post snap of that board in your TV to identify what kind of board is that.
    Please check volt written on output connectors on power board and take out reading with multimeter. Let me know what volts are missing or goes down.
    Thanks.



  • Shahid Electronics
    Shahid Electronics Oct 07, 2009

    Does it look like following board?




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