Question about iLO LCT32HA36 Television

1 Answer

LCT32HA36 TV's Green power light will come on. and it will go in standby when i power it off and green when i power back on. but i get no picture or sound. im a electronics guy myself (computers) iv replaced CAPS before in computer LCD screens. but in this TV i dont know witch ones i can try and replace. would i need to replace the ones on the Power supply board? or on the TV tuner board? theres just so many to go replacing them all. is there a way to test each one with a multimeter?

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  • slightlyunpr Jul 12, 2008

    all the caps seem normal. no bulging. no leeking caps. they all look ok. even tho they might not be. whats my next step?


  • slightlyunpr Jul 12, 2008

    I have found out that its the inverter. im getting picture useing a flashlight and looking real close to the screen and im also getting sound. the inverter is getting 24V at the plug from the PSU. the inverter on/off switch wire is only getting 4.9V. the cord running power from the LCD Controller board over to the turner board is marked 5V and its getting 4.9V. theres a RED LED light on the tuner board thats not on. heres a few pics.


    kinda lost on what to try next. all my troubleshooting points to the
    inverter board. but that red LED being off has got me thinking it may
    be something else.







    if the inverter is what is bad does anybody know where i could get one of these?





    Power Supply is a MLT169B REV 1.2





    Inverter is a CMO 1320B1-16A





    Tuner Board is a E3761-053020-3 has phillips on the tuner in/out jack box.



    Pic1

    Pic2


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  • Master
  • 2,296 Answers

Check the capaciotors in the power supply for bulging conditions.
Click here to have an idea how they might look like.
Good Luck.

Posted on Jul 12, 2008

  • 1 more comment 
  • Jaime Hernandez Jul 12, 2008

    Check this guide on where they are located as well instructions on how to replace them.

  • Jaime Hernandez Jul 12, 2008

    If they all the capacitors look good, measure the voltages with the LCD connected to the AC line and connected to the rest of the circuitry just to see if when current is being drawn from the power supply the voltages drop. Pay attention to the 5VDC and the 24VDC, if those values decrease it means the capacitors are not working properly.

  • Jaime Hernandez Jul 16, 2008

    If everything measures correctly from the power supply to all the circuit boards, chances are that the inverter board is not working.

    I would suggest to check all the solder joints, specially where the inverter transformers are solder, if one of them has a dry or open solder joint; the rest will not work or power up.

    Good Luck.

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