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I have a LG 42LE5300 Led tv when I turn the tv on it shows the LG logo and then goes black but the sound works the sound that is made qith a snowy screen. Would changing out the power board or he main board solve this problem?
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Chances are you have bad lamps in the panel...you will need to take the front cover off and get under the panel and test them and see if some are bad, if they are replace the strip...good luck as its not all that easy to get the panel off and back on without damaging it, use extreme care handling it or once you get the lamps working the panel can be damaged and then it has to be recycled as it can't be fixed
Hi Randy,
Since you have replaced all boards and the TV still does not work, The LED's strips have failed and will need to be replaced.
Check the link for more info about how replace the LED strips.
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https://www.youtube.com/watch?v=xUzCLgoSPGM
Sep 15, 2014 - Uploaded by ShopJimmy.com
LED & LCD TV How to Diagnose Symptom of No Image on the ...the the tv turns on but there is no picture or sound and I can't seem to fix it the .... +tbones11234 I have the same on myHisense 55" TV,what did you ... The problem is when i turned it on it shows on the screen the sony logo three times then its ...
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https://www.youtube.com/watch?v=kFdVi2ejfzA
May 8, 2014 - Uploaded by ShopJimmy.com
TV Repair Help for a TV With a Black No Image on the Screen ...Click Here to BUY TV REPAIR P... ... I Have a Hisense Tv in My Screen Is Not Working Right The brightness is ... Hi my TV shows the picture for a moment and then goes .... here the sounds but you cant see nothing and a sanyo flat screene.
My 32' LG LED TV has suddenly lost picture! The sound is all right but the Screen is pitch black. After switching it on the picture flashes for a second and then the screen goes completely black.
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https://www.youtube.com/watch?v=IBRE1Dcyxp4
Jan 13, 2012 - Uploaded by Clay Whitehead
TV Has Sound But No Picture Troubleshooting Guide - Duration: 2:30. by Repair.com 472,733 views. 2:30. LG LCD TV REPAIR -NO PICTURE ...
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/
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.
Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
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