If you have an LG 47LB6100-UG and your screen is flashing on and off, the backlights are blinking then it is caused by bad LED lights inside the screen.
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LG 47LB6100-UG Flashing on & off
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Re: LG 47LB6100-UG Flashing on & off
I fixed it. I fix lots of TVs but I have to say that fixing it right is a lot of work. The LEDs they use are cheap so to fix it right you have to desolder every LED and replace it with a high quality LED. The LEDs are not expensive but the time to replace them can seem like forever.
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Re: LG 47LB6100-UG Flashing on & off
Was it somewhat easy to get to the LED strip? I'm set up to do any job like that but if it's too time consuming, then its not worth the cost for me. Here is the CL post.
https://pittsburgh.craigslist.org/el...646721165.htmlThe strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Re: LG 47LB6100-UG Flashing on & off
You can buy new LEDs on Aliexpress for $6 for 110 pieces shipped in 1-2 weeks. I have a 858D hot air station. Pop off the lens and you will need to remove the circular paper backing or it will burn. Remove the old LED. Apply flux and replacement LED. I use 400 degF for about 10 seconds. Replace paper backing and I put the lens back with crazy glue and zip kicker accelerator on the lens side. Lens needs to sit flush and exactly centered. You may need to scrape off the old black nubs. I test after each step with a LED tester.
Update the firmware and make sure backlight level is set to 60-70 for ALL inputs.
https://www.aliexpress.com/store/pro...775437715.html
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Re: LG 47LB6100-UG Flashing on & off
I too have a858D hat air station and replaced individual LED on an entire strip. Actually four strips to repair a TV. It was time consuming but it was a job with much satisfaction after seeing it work. However, I have started to replace entire strips instead as it is a bit more costly but easier on my eyes and back. If I cannot get original new strips I do not buy used strips, at all as they would have some mileage on them and may not last. So I use universal strips that ARE new and just count the number of LEDs per strip to load the Driver as the original.
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Re: LG 47LB6100-UG Flashing on & off
Originally posted by neilc6 View PostYou can buy new LEDs on Aliexpress for $6 for 110 pieces shipped in 1-2 weeks. I have a 858D hot air station. Pop off the lens and you will need to remove the circular paper backing or it will burn. Remove the old LED. Apply flux and replacement LED. I use 400 degF for about 10 seconds. Replace paper backing and I put the lens back with crazy glue and zip kicker accelerator on the lens side. Lens needs to sit flush and exactly centered. You may need to scrape off the old black nubs. I test after each step with a LED tester.
Update the firmware and make sure backlight level is set to 60-70 for ALL inputs.
https://www.aliexpress.com/store/pro...775437715.html
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Re: LG 47LB6100-UG Flashing on & off
Got that. Thanks.Last edited by Andrew F. Ali; 07-25-2018, 10:11 AM.
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