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F_L and F_R are feedback. If you disconnect any cable (left or right), then the panel and t-con feedback is disrupted....Last edited by lotas; Yesterday, 11:40 AM.
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In such cases, a milliohm meter helps a lot, where there is the lowest resistance on the components, that is the culprit.
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F_R <---> F_L[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"F_L.png","data-attachmentid":3260318}[/ATTACH]F_R <---> F_L[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"F_L.png","data-attachmentid":3260318}[/ATTACH]...
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The jumper on the motherboard must first be placed between FB_TRDY_1 and FB_TRDY_3, and then the LVDS cables must be removed....
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Place a jumper on T-con F_R< --------->F_L, disconnect the cables going to the panel one by one and check the non-working side.
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I wrote about this above. "(eMMC is a nand flash + built-in controller (two in one)"...
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The short circuits have disappeared, now connect the panel with the lvds cable and check again for short or low resistance (without this chip)....
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In plasmas they usually installed Nand memory, in old LCDs they began to install eMMC of small volume 4-8Gb and the memory was filled almost to capacity, and rewriting became more frequent (eMMC is a nand flash + built-in controller (two in one), which contains its own firmware and now this controller monitors the health of nand memory; when its health ends, the controller blocks access to memory).
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Have you tested with the lvds cable disconnected? Disconnect the cable and apply a small voltage from the laboratory power supply (5-10v) and adding amperes (1A +) you can find that there is a short (find the culprit) on this bus. You just need to know exactly what voltage the panel (matrix) is powered at - some are 5v, some are 12v!
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This firmware has nothing to do with such a defect, was the picture good before?
How many lvds cables go to panel 1 or 2? Did water or liquid get on the panel?
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https://[url]https://www.badcaps.net...one correctly.[url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-tvs-and-video-sources/3256269-samsung-ue43mu6105kxxc?p=3256320#post3256320[/url]
Whatever will help someone, that’s how it should be done correctly.
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Like this.[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"rrfr.png","data-attachmentid":3259056}[/ATTACH]Like this.[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"rrfr.png","data-attachmentid":3259056}[/ATTACH]...
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