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Samsung lcd turns off - Projection Televisions

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  • sambec Feb 19, 2008

    the inverter has blown

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Samsung lcd turns off

  1. you chack your power supply.
  2. if lcd green light on or no picture hope some problem in samsung lcd ......
  3. go to your vender ........

Posted on Feb 16, 2008

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Hi there, check the switch. and check up the power supply section. do some test. ty

Posted on Feb 16, 2008

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I have a 50" Samsung tv. The tv turns on and the screen comes on, then within 1 minute the screen goes black. I can still hear sound.


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Samsung LN46A580P6F LCD HD TV is turning on and off from two to ten times before it stays on when the tv is cold


Samsung LN46A580P6FX
On the main board, IC104 (Part #SPX1587AT) is a 3.3VDC to 1.8VDC regulator. When this IC fails, the 1.8VDC drops substantially when the TV is turned on. After five minutes or so, the unit operates fine. This IC can be purchased from digikey for about $1.80.
Another fix is to attach a 1000uF 10 volts capacitor from ground to the DC source of this IC. I used a 1000uF 50V (overkill) for proof of concept. See attached pictures.
samsung-ln46a580p6f-lcd-hd-tv-turning-mqhl0awz5gnlgxm4bgzs3qu1-4-0.jpg

samsung-ln46a580p6f-lcd-hd-tv-turning-mqhl0awz5gnlgxm4bgzs3qu1-4-2.jpg

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