Sounds like back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
SOURCE: My Aveis lcd flat screen has sound but no picture???
sounds like your picture bulb has blown!! not good they are very pricey!@ they only have so many hours so turn the tv off when you are not watching hope this elps ,, good luck!
SOURCE: what is the problem with flat screen tv lcd no
Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
SOURCE: No sound on my Sanyo LCD 32" flat screen tv
I had this same problem this morning. Luckily, when I reset the whole thing and did the channel search again the sound returned. I have no idea why it fixed it but it did. Hope this helps you.
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