Lcd problem, blue screen displays "analogic signal"

You have selected an input on the display that is not getting any signal that the display can recognize. Press the source button either on the set or on the remote until you get a signal.

Bought a conversion box!!

I'm afraid, its problem of LCD Panel (screen).
LCD Panel replacement is only solution for this problem and will cost you 70% of TV price, please contact nearest Sony service center for LCD Panel replacement.

This blue light flashing means there is power to monitor bu NO video signal. No Analog or digital Video . analog is the regular plug for PC to Monitor, the other is HDMI digital or other digital. Check signal digital/analog means again: No video signal from PC detected.

Daddy

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Was just the DTV card replaced only or the mainboard? Replacing the entire mainboard should do the trick.

Press the "INPUT" button and make sure "TV" is highlighted.

Reset the Audio setting to Factory setting.Should stop this.Still same problem,than ur tuner signal board is the problem.

I bought the 32 inch LCD tv. I contacted Sharp. Here is there response.
Thank you for contacting Sharp Electronics Corporation.

The display will populate on screen any time there is a change to the incoming signal (mono to stereo audio, weak/fluctuating signal strength). Unfortunately there is no way to deactivate the on screen display. If you are able, try using an alternate connection (composite video and analog audio; yellow, red and white cables) from your source device (cable/sat box, if using) to the unit. This will prevent this issue from occurring by providing a more consistent signal. Let me know if you have any other questions!

How old is the set.. If you its relatively close to being out of warranty LG will probably cover the repair. Contact them at 800-243-0000.