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LG 42 LED Strip Troubleshooting - Identifying + & - Diodes, Testing Individual LEDs, and Paths

creativ_pl 7734 9
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 16668669
    creativ_pl
    Level 21  
    Hello, it's a simple matter, but somehow I can't figure it out. Well, I check the led strip in my LG I want to check the leds one by one, but I can not recognize how the paths are going, i.e. I can see how they go under the foil, but I check with a meter, translate and nothing.
    With the power supply alone, the whole strip was ok, but I checked that I can only give 30v ino and there are 10 of them on one strip. 3 of the 5 strips can somehow highlight, but the other 2 are not. I am asking for help in identifying the paths where + and where - diodes. Thank you
    LG 42 LED Strip Troubleshooting - Identifying + & - Diodes, Testing Individual LEDs, and Paths LG 42 LED Strip Troubleshooting - Identifying + & - Diodes, Testing Individual LEDs, and Paths
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  • #2 16668747
    h jaworski
    Home appliances specialist
    Buddy in the 2nd photo on the right side of the diode you can see 3 paths 2 thin 1 thick diode is connected between the thick and thin middle, at the very top thin is the return path from the last diode at the end of the strip.
  • #3 16668855
    creativ_pl
    Level 21  
    Thank you, good man, I tried in all ways, but not this one. Regards.
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  • #5 16669352
    creativ_pl
    Level 21  
    Thank you. I am asking for one more information. Well, the symbols on the strip in turn
    1412a-6916l; 1413; 1414a; 1415a when buying a strip from which I will translate diodes, do I have to look typically for all of the above markings? Is it enough to agree only the initial numbering 6916l. I know that the diode parameters must be the same for everything to be ok.
  • #6 16669798
    h jaworski
    Home appliances specialist
    Put on new diodes, not from the outlet, because overheated will not work for a long time and it will be dismantled again. It all depends on how many slats are damaged, how few are a problem, like 1 or 2, I'm looking for slats.
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  • #7 16670131
    creativ_pl
    Level 21  
    2 are only fully functional. The rest has 1 burned piece, or 7. On ebay are the same LEDs just wondering. As I can see the pictures of the back side of the tragedy with soldering will not be only the caps are glued with some special glue ?. Or better not to solder and look for whole new strips.
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  • #8 16670344
    h jaworski
    Home appliances specialist
    Strips cost a little. In this case, I looked for the same strips 2 pcs and damaged diodes cut out all the damaged diode together with the print falling on it and from the new one I insert the cut out fragment together with the lens advantage you do not have to play with setting the lenses later. A little misaligned lens and a lighter spot on the screen. There was a forum search for it.
  • #9 16670699
    creativ_pl
    Level 21  
    We not remarked. I was talking about cutting diodes with paths. I managed to find a new set of 10 items at aliexpres at chiniola for PLN 180.
  • #10 16723188
    creativ_pl
    Level 21  
    It is so strips purchased on aliexpres, the seller has displayed information that the product is original, but .... After unpacking, actually when it comes to printing, workmanship, numbering and font the same differences are the lack of one series of numbers and the original tape is with Chinese patterns and it is purchased for 3m. Is it really the original, but I think so. After all, the tv works all cost 160 PLN.
    LG 42 LED Strip Troubleshooting - Identifying + & - Diodes, Testing Individual LEDs, and Paths
    LG 42 LED Strip Troubleshooting - Identifying + & - Diodes, Testing Individual LEDs, and Paths

Topic summary

The discussion revolves around troubleshooting LED strips in an LG television. The user seeks assistance in identifying the positive and negative paths of the diodes on the LED strip, as well as testing individual LEDs. Responses suggest examining the connections between diodes and paths, with one user recommending the purchase of new diodes rather than using overheated ones. The user also inquires about compatibility of replacement strips, specifically regarding markings and parameters. Several users share experiences with sourcing replacement strips, including concerns about authenticity when purchasing from online platforms like AliExpress. The conversation highlights the importance of ensuring proper diode specifications and the potential for DIY repairs versus complete strip replacements.
Summary generated by the language model.
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