Samsung LN52A530 Vertical solid line HELP

[curtisc306]

Re: Samsung LN52A530 Vertical solid line HELP

UGH! Ripped the whole thing apart. Inspected tab bonds all look okay...took the tcon/lcd cables off cleaned male/female ends with rubbing alcohol and compressed air. Put the 1000 screws back together and still the same result.

Next step I will try will be to rip the whole thing apart again and with the lcd plugged in try pressing on the LCD/tcon cables and see if something is just wrong there and replacing the caps on the power supply when they arrive. I want to give up but I don't

tibimakai is there something I missed or should try?

[tibimakai]

Re: Samsung LN52A530 Vertical solid line HELP

The fix it was short lived. The lines came back today after like an hour, but they look totally different then before.
They come and go.
I guess I had two problems with this TV and I fixed one issue, but there is another which was hiding below(same portion of the screen) as the multiple colored lines.
At this point to me it seems like it's caused by heat. I will continue tomorrow the experiment and I will see if it fixes the issue. Basically I have pointed a fan on the problematic area of the screen and let it run for more then an hour.
I haven't watched the TV all this time, but a checked on it a couple of times and I haven't seen the lines since I have used the fan.
I will know more tomorrow.
If it's heat related, I will have to think of some kind of cooling.

[tibimakai]

Re: Samsung LN52A530 Vertical solid line HELP

We may not have the same issue. I'm not an expert in this, I'm just trying out things that I think that would help with the problem.
On mine when I reconnected the panel side ribbon after cleaning it, I had a perfect screen. It seems that if I let it run for a longer period of time the lines will come back, but they look different.
Could you try cooling that area, just to see if it makes any difference?
You say that you have a solid black line? On your picture I don't see a solid black line.
It looks like this, but the colors are always changing.
http://www.youtube.com/watch?v=eejE6O340EY

[tibimakai]

Re: Samsung LN52A530 Vertical solid line HELP

There is a Toshiba with those multicolored lines as were mine in the beginning and there I have found this post which suggests as I begin to think that this is caused by excessive heat of those tab driver chips.
It seemed that he fixed his problem and I think that I will try something similar on mine.
Here is what he said:

"had the same problem ... you must get to the display panel itself, and inspect the ribbon cables. NOT the 2 obvious ribbon cables connecting the display board. you must remove the metal frame to the panel - you will see 6 other ribbon cables with little heat sinks on em.. the problem is some 'overheat', creating panels of lines below them. I cut a tin can into 2 strips and placed behind the hear sink. problem solved. i'll try and post a more detailed procedure somewhere. "

519matty 1 year ago

I don't really understand where he put those strips, but I will put them under the tabs in a way that the chips will sit on these strips. I may glue these strips to the black plastic frame and use thermal paste on them.

[curtisc306]

Re: Samsung LN52A530 Vertical solid line HELP

As in the ribbons you took pictures of that had the little pokes in them? I did take apart the entire LCD including those little long black screws. However as far as ribbons that can disconnect from the LCD all I found were the tcon to lcd ribbons. Sorry semi n00b at this Thanks for the help though.

Yes my problem is a solid vertical line which is greenish around 6" width running down the right side of the LCD. Picture below...

[tibimakai]

Re: Samsung LN52A530 Vertical solid line HELP

Those two ribbon cables are the ones that I have cleaned, they are the ones that connect to the thin LCD panel boards.
After cleaning these connectors I went from thin multicolored lines to wide color changing lines which sometimes go away, sometimes they flicker, same as the Youtube video.
My next step is to see if cooling those long chips in the tabs does anything to the picture. To me it seems a bad design, since those chips get very hot and they are closed inside a closed environment which can't lead to good things.

[tibimakai]

Re: Samsung LN52A530 Vertical solid line HELP

Did you try pushing down on those tabs above the problematic area?
Anything happens?
I'm new to all this too, I have started in February.

[curtisc306]

Re: Samsung LN52A530 Vertical solid line HELP

Any luck/solution yet? I have not been able to get to my LCD yet.

[cadiman]

Re: Samsung LN52A530 Vertical solid line HELP

On the sony panels I put a thin aluminum strip behind each chip. They do get really hot.

What I did notice is they get hotter when there are connection issues.

I have not had any of these last more than 3 months.

[tibimakai]

Re: Samsung LN52A530 Vertical solid line HELP

No luck. I managed to fix it temporarily, but lasted only for a couple of hours.
I have noticed yesterday that my issue is the first tab from the center toward the right side.
I have installed some .030 thick aluminum sheet metal, long as permitted by the plastic parts, but if I push down on that bad tab, the lines come back.
I'm thinking that must be some rupture in the tab traces, due to excessive heat. I guess that the tab becomes brittle from all that heat and by moving it around the traces get broken. Now to find that it's very hard. It could be at the chip itself.
I may end up just selling it for parts (the whole TV) or sell the boards on Ebay. I think I'm done with TVs with lines on the screen or tab issues.
Two TVs like this in a month, that is to much. One it was a VW46 Vizio and now this Samsung. I will stay away from Sony too with screen issues.

[curtisc306]

Re: Samsung LN52A530 Vertical solid line HELP

Well I got a decent price on an LG 60" 3D PLASMA. 7 years of warranty I wonder if changing the caps would fix the line issues on these stupid samsungs. Meh its for sale now.