Question about Samsung LN40A450 LCD TV

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Standby power is ok (red light) but the green never turns on even on remote and push button

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You have a switching problem. A MOSFET transistor component or a leaky capacitor problem. You need servicing Sir/Ma'am.

Posted on May 26, 2011

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Posted on Jan 02, 2017

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SD P50A3 Q red Standby is on....will not power up.


ok sir you have defective power supply at hot side section! and the power oscillstion circuit! your unit need to diagnos to know the exact defective parts!

Oct 21, 2007 | Pioneer SD-P50A5-K 50" Rear Projection...

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What is stand by button for


It is for put the set to standby. If you press it, the set will stop working, but it will be still alive. When you press Power button on the remote control, the set will come alive. OK?

Apr 19, 2015 | Televison & Video

1 Answer

Wont power on


some tv's always have standby light on, even iff you turn off by tv button. solution 1: with light on, press a number on remote. solution 2: with light on press stand-by button on remote. solution 3: with light on push the 'on' button on the tv set. solution 4: unplug tv set, wait a few seconds then plug back in, if no light then turn on tv using button on the set, and then channel number.

Jun 25, 2012 | ESA PDP4294LV1 42 in. EDTV-Ready Plasma TV

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The "on" light is always green, even if turned off. Why?


It occurs when your wii in the Standby, but WiiConnect24 is enabled with Standby Connection is enabled. the content can also be received when the Wii is left in standby mode.

WiiConnect24 can be turned on or off via the setup setting. While the console is in standby, the power LED indicates the current status of the standby connection,

  • Red indicating Standby - wiiConnect is off,
  • Yellow indicating Standby - Connect mode is on. If you hold the power button for 3-4 seconds, the Wii goes into standby mode with Standby Connect off. and WiiConnect24 will not operate until the console is turned on.
  • Green ...

Jan 18, 2010 | Nintendo Wii Console

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When i on the tv by remote the red standby light turns into green and i hear the tv sound but not picture and after a one or two second the green light turns into red. The tv goes into standby mode when i...


the high voltage or flyback transformer is not working.the sound runs off a separate fixed power supply.if you run your hand across the screen,is there static?that would mean the high voltage is ok but there is another circuit fault

Jul 08, 2009 | Sony FD Trinitron WEGA KV-36FS120 36" TV

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