LG tv 49LF5500 screen repeatedly flashes on and off, repair.
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- เผยแพร่เมื่อ 20 ต.ค. 2024
- On this 49 inch LG television model 49lf5500 the screen and/or picture constanly flashes on and off. This is due to a backlight problem. In this tv there are 5 led strips and only 2 lines. One line lights up 2 strips while the other line lights up 3 strips.
Since the strips are configured in a series circuit the voltage for each line is different. I'm going to show you how to check each individual strip and isolate the single bad LED and LED strip.
To buy the complete set of led strips... www.shopjimmy....
MAKE SURE THE PART NUMBER ON THE STRIPS MATCH.
*Sponsored by Marc-Anthony Television repair in Chicago, IL
televisionrepa...
FOR TOOLS AND TEST EQUIPMENT
bigdogelectron...
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Hey man, just want to say thanks. I used this video and followed it step by step and repaired a 65 in LG tv I found in the dumpster! Lol this TV is great and costs thousands brand new! Only cost me $25 for the bulbs! Thanks a lot for this man! Greatly appreciated.
I bought the back-light strips off of ebay, insalled them myself, and got the tv to work. This video helped me a lot. Thank you.
Good video. I like your style of teaching. Thank you.
I made an H-frame out of wood and attached 4 smaller suction cups to it. More secure and no risk of damage.
Try picking one end and drop it slap 👋
The back of the TV
Let the TV 📺 heat up and repeat
This worked for me
The led may not be bad
The connection is bad
Cool technical video you did here. Thanks a lot.
What does a job like this usually run if taken to a shop?
Hi there. What is the device you are using to apply voltage? I only have a standard multimeter
Backlight tester.
@@bigdog8882 thank you
Great video, Big Dog! Thank you!
Thanks for watching!
great video as always, how do you deal with individual replaced diode that are brighter than the rest diodes? thanks. A dimmer led is not that noticeable, but it seems a brighter one will be easily spotted when you have the screen back on. Thanks!
probably not, just make sure that the led cover is centered on the led and it should be fine.
❤thanks soo much great explanation
At the end all LED must be working? Or TV will work if some of them are dead? I found this 55 LG TV on dumpster and 37 out of the 55 are dead and lights are blinking just like your video
Replace all led strips
Please help. At start up my tv turns on and off for around 20 mins then turns on. Gotta leave on the rest of the day if we want to watch. What can the issue be. Power surges?
Hi Big dog, I did everything exactly as you said, it worked, then I putted the LCD on top to test everything before to assemble and it worked just fine, felt like "work is done". But after assembling (and I tried to be so careful specially with the LCD), the image is messed up, there is a white strip going from side to side and the LG logo is repeated all over like a shadow, then little by little the whole screen is turning into black. What you think is it? Visually the LCD look great, I don't think it's it
you didnt show how to change the LED strips, or did I miss that part?
I have an LG 65" LED tv. Occasionally it reboots itself over and over again. Not screen flickering but a reboot as if you were turning it on and off. Some nights it reboots itself like 50 times in a row every few minutes, sometimes it doesn't happen at all for as long as a week or two. Any guidance on where to start testing or replacing? Thx
Also when testing just put the probes in series with the leds rather than removing the connectors, I use an adjustable power supply at a set limit. Also best to change any that look a blueish colour they normally start flicking at lower backlight levels.
Hi
Do you happened to have any left over 6916L1944B/ 1945B for LG 49LF5500
If I'm having this problem with the tv after the first 2 weeks of purchase would I better off returning it and swapping it out for another one cause I'd rather not take my tv apart.
Such hard work great job
My lg tv comes on perfe t perfect pi there then few mins later it flickers would that be back light
Where did you order those suction cups?
I think I bought those at Home Depot. Their actually made for holding and picking up glass. So u have to find that section in Home Depot.
@@bigdog8882 Thank you bud. Very few answer questions and I appreciate it!
You squeeze the lip connector and pull up it comes out
55 inch heiense
On and off light flashes but have picture on screen what can I do to fix ? Please help
superb video, sir. As far as the LED tester goes, can't I just apply a DC voltage at the test points on the strips and test that way? If so, do you know the voltage?
Yes I can use a multimeter.. on DC voltage ground it to the chassis and proceed to test it
@@ITTGIrL2.1 thank you - I had a dc power supply and was able to test the individual leds and the strips as a whole. Worked pretty well. Found at least one bad led. Can’t believe they’re in series like cheap Christmas tree lights.
@@artompkins7958 ikr🤦♀️🤣
@@ITTGIrL2.1 ikr = ? "I know, right?!" ?
@@artompkins7958 exactly
I’m getting more and more that have had a lens avalanche top lens has dropped off hit the next one down and so on grrr I hate them lenses lol
I don’t think I have ever had an LG set with just one led gone bad, oh and the odd fire how that happens is beyond me lol
Keep up the good work 👍
I’m really hoping this works
Thanks!
Nice!
I had 60in like this with glue stuck to the led to the frame
Will you repair my TV?
Bad boy please happy
3:25 voice crack
10:14 voice crack
12:13 voice crack
Just buy another tv man, this is too much.
I fix small engines, its a lot easier than this loo
He's a TV repair man though?
Bad boy please happy