Question about LG 42LC2D 42 in. LCD HDTV

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42LG5010 When switching the telly on the red light flashes then to blue light comes on to show we have power but no vision or sound

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I would start by shining a torch at the screen when the TV is turned on and see if you can see a faint image in the background, if you can then this would more than likely be down to your inverter board/s
If not then if you have no picture and no sound at all then i would put this down to your main AV board (the one with the scarts and inputs on )
These guys have all boards for this TV

LG LCD Spares

Posted on Mar 27, 2011

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Posted on Jan 02, 2017

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These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
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