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Horizontal Lines Through Display

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Old 05-11-2010, 12:46 PM   #1
A couch and an HDTV to go please.
 

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Default Horizontal Lines Through Display

I bought a 46" Samsung LCD TV about 2 1/2 years ago from CC. With it, I bought a 3 year at home service plan. Probably 2 or 3 months ago the display started acting up with sharp white lines going across every third of the way down. It started out minimal and slowly is getting worse. As the TV is on (ten minutes or less) the lines will disappear and the display goes back to normal.

So, I called up the warranty company and they have a local shop in my area take care of the work. First guy comes out, takes the TV apart, and looks for blown caps or anything out of the ordinary. Nothing. He said likely it is one of two things; either the input board or the controller board. He leaves and orders the parts. Week and half later another guy swings by to install the parts. Same issue, actually a little worse. Picture is full of snow. He said has to be a bad controller board that they ordered. Leaves and orders another.

First guy comes back by after a week and half and installs yet another new controller board. Same issue as before but without the snow. He tells me he wants to take it to their shop so they can really look at it and have other techs look into. Great, I don't give a f*ck, get the god damn thing working.

Week goes by, I call, ask them if its done?? Lady there pulls up my file and tells me its ready. Great, don't worry about delivering it, I'll come pick it up. I have the TV maybe 1-2 days and the same issue comes back. I call them and complain that the issue isn't taken care of and the lady tells me I have to call my warranty company back up to get a new work order. Great.
Get that taken care of, few days later the second guy turns the TV on and says, "has to be the controller board." I'm like you got to be f*cking kidding me, how many controller boards are we going to go through to find out that's not the issue?!

So, that leaves me to today waiting on a call from them to install this yet again just to find out it doesn't take care of the issue. I think its the ballasts going out, but what do I know?
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Old 05-11-2010, 01:34 PM   #2
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I would be seriously talking to the warranty company about replacing that TV with another new set that works. 3 repairs already sounds like a lemon...
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Old 05-11-2010, 01:53 PM   #3
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The warranty company is replacing the TV. I just want to fix this on my own if I can figure out what parts I need to buy that haven't been replaced.
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Old 05-11-2010, 04:09 PM   #4
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If the warranty company is replacing the TV, why are you worried about obtaining the parts to fix it yourself?

Am I missing something here?
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Old 05-11-2010, 04:34 PM   #5
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I get to keep the old one.
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Old 05-11-2010, 07:58 PM   #6
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Quote:
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The warranty company is replacing the TV. I just want to fix this on my own if I can figure out what parts I need to buy that haven't been replaced.
Good to hear, kudos to that warranty company. BTW which warranty company is it?
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Old 05-11-2010, 08:00 PM   #7
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I get to keep the old one.
As long as it doesn't cost an arm and a leg, that would be nice...Not sure what the solution would be though and the TV at this point seems problematic so I wouldn't invest much for the repair as it just might fail again...
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Old 05-11-2010, 10:11 PM   #8
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Does this sound like an issue with the ballasts? At this point what else could it really be?
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Old 05-12-2010, 08:08 AM   #9
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The ballast is what powers the florescent lamp used for the backlighting. I doubt that is the problem since the backlight works and the screen is not black right? It is like either the panel (not worth the cost to replace), or it could be the video processing board as a guess.

It might help if you included the whole model number though.
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Old 05-13-2010, 12:11 PM   #10
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OK, so the model # is LN-T4661F.

As it sits the controller board was replaced two times and the input board once.

The lines come on for about 5-10 minutes on startup and disappear, then the display is back to normal.
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Old 05-13-2010, 12:12 PM   #11
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Old 05-13-2010, 01:47 PM   #12
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Just for kicks, try unplugging power to it for a couple of hours. If it goes away then get a good surge protector and see if that resolves the problem, as slight spikes in the power might be causing this if unplugging it works.
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Old 05-13-2010, 03:40 PM   #13
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Just for kicks, try unplugging power to it for a couple of hours. If it goes away then get a good surge protector and see if that resolves the problem, as slight spikes in the power might be causing this if unplugging it works.
This shouldn't be the problem as I have had an APC battery backup on it for the past year or so.
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Old 05-13-2010, 05:20 PM   #14
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Believe it or not, it could be a faulty power supply in the TV...
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Old 05-13-2010, 05:41 PM   #15
A couch and an HDTV to go please.
 

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If those are relatively cheap, it may be worth looking in to that scenario, I guess.
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