Question about LG Computers & Internet
Hi i have a problem with my Tv it has sounds but no picture.....all black what will be the possible parts do i need to check or replace?
LCD, LED, OR PLASMA.
If plasma, you will have to replace the Y-sustain board buffers.
Else, need to trace the power supply to XYZ
Posted on Mar 25, 2014
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Posted on Jan 02, 2017
Also check if your cables are fully seated. I've been loosing video
but not sound through my digital TV converter box. I finally climbed in and found the cable was loose.
Posted on Jul 16, 2008
kcs36dd, Lcd TV's also have, just like LCD monitors, an AC to DC voltage power supply. It is called a "switch-mode-power-supply" and generates the DC voltages required for all the other important electronic circuits inside the unit. 98% of all 14" to 22' lcd panels have backlighting provided by "cold-cathode-fluorescent-lamps" (CCFL) that produce WHITE LIGHT so you can see all the pretty colors that the glass LCD PANEL produces on the screen. The INVERTER circuit requires 12vdc to 20vdc from the SMPS to convert into 500 to 1000v ac to light-up the CCFL's. IF the SMPS detects a FAULT CONDITION with itself or the INVERTER it will go into what is known as FULL or PARTIAL SHUTDOWN MODE to try and save itself from a catastrophic, nonrecoverable failure. e.g. sparks, smoke, fire. lmistyrel on aim.com I could give you more assistance if you had provided following informatiom.
1. How old is the unit? 2, Approximate total "ON" hours unit has? 3.Has unit failed within the WARRANTY period? 4. Will SAMSUNG do a cash+old unit swapout because of PREMATURE FAILURE? 4. Do you know enough to do a unit TEARDOWN and inspection to possibly determine ROOT CAUSE of SMPS/INVERTER failure? 5. Can you handle a soldering iron and solder to make DIY repairs to unit. 6. Since your unit is just a little more complex than a LCD MONITOR, have toy viewed on YOUTUBE short video clips of "LCD monitor disassembly" or "LCD monitor repair" for the most common cause of BLACK screen complaints? If further assistance is required do additional post to original. 12fixlouie aka louie12fix on fixya
Posted on Dec 06, 2009
connect audio output (RCA Jack white n red color) from the video, to the audio input of your TV. Make sure you use same AV channel for the video and audio.
i.e AV1 or AV2 or AV3
Posted on Apr 10, 2010
SOURCE: MY LG LCD TV PICTURE DIED
I have a 47LG50 with the same problem watching like normal and then all I had was sound with a faint light in the background no menu or anything. could hear channels change when using the remote. similar problem for me? what is the cost of something like this?
Posted on May 27, 2010
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