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Once I turn on the DVD, I can only see couple of second of the screen afterward is all dark, I can still hear the sound. I try to use the LCD on/off button, the screen come back but only last for 1 second, can you please tell me why? It is worth to fix?

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I dont know ans for this,but i want to know solution for this,pls help me.....

Posted on Feb 12, 2009

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Could be a couple of things.
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If you look very closely, is there an extremely dark picture, or a solid black screen? If it's an extremely dark picture, you just need a new backlight. If it's a black screen, you either have a bad connection (broken, shorted or unplugged cable), or need a new LCD. Let me know, and we'll go from there.

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This sounds like the back-lights have quit working. This is made up with an inverter (ballast) and fluorescent lamps. I want you to try something. In a very dark room turn the tv on and watch what happens to the screen. There is three things that can happen. first the screen will stay completely black. This means the inverter never fired, and this is usually a failed inverter, but sometimes the power supply may fail. there is also a rare time the main module never outputted the signal to activate the inverter, but this is rare because you can hear the audio. So obviously the main is working at least 90%. The second thing that can happen is the screen will light for a split second then go black. This usually means that you have a bad lamp. These lamps are physically locate inside the LCD panel, and the replacement cost exceeds the price of a new unit. You may even see a dark area in the screen. The slight glow will not be uniformly lit through out the screen. Finally the last thing you may see is the screen has a slight glow. This means the back-lights work, but the video portion isn't showing. This usually means the driver board (T-con) has failed. This is probably not available separately, so you must replace the panel to fix it. And like before, the replacement cost exceeds the price of a new unit. One more thing to do when the set is on and in the very dark room if the screen is black, point a very intense flashlight into the screen. Put the flashlight against the lcd screen and see that you have video moving around the glow of the flashlight.

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Try to press and hold the power button until you hear a beeping sound. Once you hear the beep, do not let go of the power button and wait for it to turn back off. Allow approximately 20 seconds before turning on the system again. Follow the prompt on the screen afterwards and you should be good to go from that point on.

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My sister owns this unit, and like other users on this post, her screen quit working on her. She brought it over to me to see if I could fix it before she tossed it out. I first hooked the unit up to the TV with supplied A/V cables to see if the unit was outputting video. The unit supplied video to the TV fine, so I figured the problem was with the LCD screen or the connection from the unit to the LCD.

Like another user on this post, I noticed that the video would come on for a second or two when the small depress button was pressed, but then go blank again. (This button is at just below the LCD screen on the base unit – toward the middle of the base unit. You can see there is a small notch on the LCD screen that fits into this depress button when the unit is closed. This allows the unit to know when the LCD screen is closed.)

Here comes the fix that worked for my sister’s unit – I hope it works for yours also. . .

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