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I return to the matter with the second TV of this brand and model. This one has a more important problem. No image was seen. The problem was in one half of the panel. I have used the method of covering pins of one of the flexes that goes to the oanel and it has worked. However, the image is not good. It has horizontal stripes. I'm going to put images of the complete TV, and the 2 parts of the panel separately. It can be seen that the error has not yet been fully resolved. However, the image is complete. Will there be a solution?...
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thank you! you were right. I ran an eraser through the flex pins and solved the problem. Now I have another same panel, with a similar problem, but after using sealing on the flexes for a panel problem. Now it is more difficult to solve because I think the problem is putting tape to remove pins....
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Xiaomi L55M5-5ASP fine lines on the panel uniform
Good afternoon! Does anyone know how to remove these lines? They are very fine lines at the bottom of the panel. I have 2 identical panels, and I have even thought that this brand has this lattice format, although I highly doubt it.
The photo from the YouTube app is where it is best seen.
thanks in advance....
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TD Systems K50DLG12US half black and half white screen
good night! I have this screen that looks half black and half white. the tcon gives a low vgh value (5-6v). the rest seem fine. I first removed the flex from one half of the panel and then the other. Removing the left, vgh increases it to 25-26v. I think the problem is in that area, but there are not many elements on the integrated controller board. there are no shorted capacitors. could they be a cof? Some help?
By the way, now the entire screen is black. Maybe some flex was not connected correctly... I have exchanged the flex and there are no variations, I don't think they are the...
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hello! In the photo there are several voltage reference points AVDD, VGL, VSS. these give incorrect values. however, the 1.2v and 3.3v benchmarks are correct. The supply voltage of that integrated is correct. I don't know if the problem is with that integrated part or with another component of that circuit....1 Photo
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update! I think it's a Tcon problem. The problem is that the tcon is integrated. I would say that the problem is in the DC DC converter circuit. Also, when I connect the TV the integrated DC DC converter gets hot. How can I know if it is the DC DC converter or another element? I have not detected short circuits in nearby capacitors. Let's see if someone can help me diagnose the DC DC converter. I cannot replace the tcon because it is attached to the panel. thank you
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hello! could you help me? I don't see the control values for tcon, vgh and vdd. vgl yes I have seen it and it is correct. I don't know if Sony calls them by another name. The TV has TVon integrated into the panel controllers, with a single flex. It is difficult to do panel tests. Let's see if someone can help me continue. Thanks in advance...
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I update. I have cleaned the flex at both ends. It hasn't worked. In fact, yellow lines now appeared, some wider than others, until suddenly there was no image left.
Of course, I did a correct manipulation, everything turned off.
But I discovered something. The noise was not from the power supply, it came from the area of the controller boards, the area where the tcon is integrated. When the lines were no longer visible, and there was no image, the noise disappeared.
Could it be a coil in that area in poor condition that is causing the problem? Or could it...
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