Question about HP LC4776N 47 in. LCD HDTV

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Why does my ,hp lc4776n, screen come in and out

Why does my ,hp lc4776n, screen short out and go black while im watching it then come back on if i tap the side of the tv? it acts like it has a conection problem some where. also sometimes when i first turn the tv on the power light goes from green in standby to orange when its powered on, then the orange light will fade out to no light if the screen doesnt come on. when the screen does come on the orange light stays on with viewing. can you point me to the problem?

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Hello,,,open the back cover of your tv check the power supply section .to identify the power supply section ,it is the pcboard where the ac main supply is connected..there is a connector there that is connected to tha cpu board....resolder the terminal of the connector and tighten the connectors same to the other end..2nd the supply of the inverter board..resolder the terminals and tighten the connectors...the inverter board is the board where the backlights are connected .power supply of the backlights...be carefull it is a high voltage section..its input voltage is from 12vdc - 24 vdc.output is 300 up vac...back light is the bulbs that illuminates the screen of the tv...when it is busted your screen will appear black..

good luck hope this helps you...

please rate my help tnx.

Posted on May 29, 2010

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