RCA 46LB45RQ LCD HDTV black vertical line


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RCA 46LB45RQ LCD HDTV black vertical line

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mjui123
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Apr 22, 2014, 6:53 PM

Post #1 of 2 (3862 views)
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RCA 46LB45RQ LCD HDTV black vertical line	Can't Post

i just bought this tv and it has a thick vertical line through the middle of the screen. i found the fix for plasma screens with the same affliction but i am unsure if the solution is the same since this is an lcd. the plasmas involve adjusting a flex cable. i do not have the tv in my possession yet but i would like to have things to try when it arrives.
thanks

flyatyou66
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Apr 24, 2014, 9:42 PM

Post #2 of 2 (3838 views)
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Re: [mjui123] RCA 46LB45RQ LCD HDTV black vertical line [In reply to]	Can't Post

You should have got it for free.
Here's the problem? The board thats giving you that problem is on the bottom of the panel.There are 2 of them- left bottom e- logic buffer and right bottom f- logic buffer.These are sodered straight to the lcd screen, no clips.On these boards there are flex cables that deliver ??? amount of vertical lines to the screen. On 1 of these boards a flex cable has shut down completely.(where black line is)There's not a heck of alot you can do.There are smd on these boards, (smd=surface mount device)maybe you can find out if one is no good. these are small theres resistors, caapacitors, diodes,coils. It could be any or all of these.
This video shows a person taking a 46" tv apart. http://www.youtube.com/watch?v=d9XOCXLFwkM
If you watch this at about 8:30 you can see the E&F boards hanging from the screen

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