Question about Samsung LN-S2338W 23 in. LCD Television

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Samsung hdtv tv monitor no power no light

Hi,
I have a 23 inch samsung hdtv monitor that will not power on. I have taken it apart, and am looking at the power supply as the problem.
The power lights do not turn on, but you can here the sound of power flowing to the power supply when you plug in the tv and unplug it.
The fuse is fine, and none of the capacitors seem to be bulging or leaking.
What other problems could there be and how can I fix this?

Posted by on

  • marshes246 May 14, 2009

    I've uploaded some pictures of the powersupply, as well as a close up of a capacitor which looks like it might be bulging a bit? I really have no idea anymore where the problem is on it...


    http://picasaweb.google.com/marshes/Powe...

  • ESTEBAN MERINO
    ESTEBAN MERINO May 11, 2010

    i have the same tv with broken screen and the PS is good.
    send me an email i will sell it to you.


    caypianan@yahoo.com

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This is just a shot in the dark but it's possible that your power supply uses a full wave rectifying bridge made up of 4 diodes to convert the AC to DC. Check these diodes out to make sure they're not shorts or opens. You can use an ohm meter. They should look like a low resistance from their anode which is the + terminal to their cathode which is the - terminal and a high resistance the other way around. If your power supply has a little starter relay in it you can also check to see if the relay coil has been blown. It should look like a low value resistor. Unsolder and replace anything that doesn't pass these tests.

Posted on May 14, 2009

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