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Automation, Cinema, Computers, Television Forum
Led TV backlight
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<blockquote data-quote="ProDave" data-source="post: 446919" data-attributes="member: 6969"><p>I wondered if LED tv's were going to be reliable or not. I ave only repaired one, and I found it was wired with groups of LED's in series, then several such strings in parallel. All fed from a constant current driver. One LED fails so that string stops working, same constant current pumped into them, so the other strings are now over running and soon start to go pop. I was not impressed with the design. I'm not saying they are all wired like that, but they will be running the LED's pretty close to their max rating to get the maximum brightness.</p><p></p><p>Ebay is a good place for tv parts.</p></blockquote><p></p>
[QUOTE="ProDave, post: 446919, member: 6969"] I wondered if LED tv's were going to be reliable or not. I ave only repaired one, and I found it was wired with groups of LED's in series, then several such strings in parallel. All fed from a constant current driver. One LED fails so that string stops working, same constant current pumped into them, so the other strings are now over running and soon start to go pop. I was not impressed with the design. I'm not saying they are all wired like that, but they will be running the LED's pretty close to their max rating to get the maximum brightness. Ebay is a good place for tv parts. [/QUOTE]
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