LG47 LN5750 TV. Took it apart to install new led strips. Lost track of the 4 light filter panels. Anyone know their proper order on reinstall?

I assume you changed all the LED strips when you changed the bad ones, NEVER replace part of them, if you didn't replace them all, open the set up again and replace the ones that weren't replaced the first time and all will be well.

Hi Kol, I would suggest checking all of the connections that you've disconnected to install the new LED strips. The LEDs are connected in series and it wouldn't make a difference if you installed them in a certain order. If after checking all the connections the TV still doesn't work then it might be a possibility that the new LEDs might be DOA. You can test the LEDs strips using a 9 volts battery and a couple of alligator clips. Test the LEDs one strip at a time.
Hope this helps.

The backlight is LED strips. When the television comes on the power supply senses the current draw and shuts down if it is too high. When one led on the strip burns out the current draw increases. You need to replace the LED strips or troubleshoot down to each diode and find the bad one(s)

If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Disassemble and reassemble the LCD panel is given with illustrations.

http://www.shopjimmy.com/lg-lc550dug-jfr1-led-strips-12-strips.htm

Call these guys. They can assist you. What Vizio is saying is the LED strips are mounted in the LCD panel and cannot be replaced.

The led strip is faulty. Normally it's comes with the panel.
If you wish to know bout the Woking of back light LED the check the below added link.
www.electro-medical.blogspot.com

http://tvpartsnow.com/category.php?id_category=66

Does the tv screen flash on and off very quickly? Does the led standby light come on and then slowly blink twice and go out?If these are the symptoms then it is more than likely a bad led backlight strip.I have answered this question in a previous post but to re-cap.I have a lg 47ln540v led tv and had this fault. In the previous post I explained that I had replaced all the boards,main,psu and t-con and all to no avail.I checked as best I could all the solder joints,resistors,fuses etc.I couldn't see any bad capacitors and I was on the verge of giving up.This was all a bit daunting since I am not a tv technican but I am familiar with electricity at a basic level.I decided this thing wasn't going to beat me so I decided to strip the tv screen assembly apart.I checked the led strips with a battery and found one led wasn't working.I managed to source a replacement led strip from a tv repair shop from a damaged tv and replaced it and this solved the problem. As I understand it,if the circuit component that monitors the backlight function detects a fault it shuts off the power to it and goes into a "safe mode",presumably to protect the remaining leds from receiving to much voltage or current since they are wired in series.Incidentally it took me five weeks to troubleshoot this fault.I cannot recommend anyone to do this themselves since there are capacitors on the power board that hold high voltage and charge and can be very dangerous,even lethal even when tv is switched off.I hope this is helpful to someone.

POWER LIGHT FLASHES ONE SHORT AND ONE LONG FLASH.
What is the problem? THE PROBLEM IS THAT ONE OF THE LED's STRIPS IS BAD!

SHARP AQUOS LC60LE810UN RESET INSTRUCTIONS

1)Plug in TV to electric current First then wait until LED start flashing.
2)Press Volume DOWN [ - ] HOLD BUTTON.
3)Press Channel UP [ ^ ] HOLD BUTTON.
4)Press Power [ (') ] HOLD ALL three buttons until LED stops flashing and then release.

·This will reset the TV in order to fix the problem.
·THE FIX IS TO REPLACE ONE OF THE LED's. You need to open the back of the TV and you will also need to remove the front cover and panel to get to the LEDs. The TV will need to be placed facedown and on the backside. This is a 2 person job to turn the TV on its sides. Be careful with the white computer connectors (wide white strip) at the base of the TV where the TV stand sits. You will need to disconnect this in order to get to the LED's.
Once you have the LED's exposed, you will need to unplug one by one by placing the new strip next to it until the unit turns on. You will have to use the RESET procedure above if the Power lite flashes. The Power lite MUST BE ON SOLID - no blinking in order to test the strips. The LED's will flash, but still one of them will be burned. Even if you stare and all the strip light-up, you will still need to check one-by-one!
Once the TV lights up, your face will also light up with joy! Put everything back together and you are set. If you need the complete instructions which come from Sharp as to how to disassemble the unit, please send me an e-mail to [email protected]. Please note I don't check this address daily, so a few days wait may take for you to receive the instructions.

Where can you buy the LED's - try searching Yahoo.com or Google.com for resellers.
SHARP AQUOS LC60LE810UN LCD STRIP INFORMATION

LONG STRIP (49 LED's)
FRONT SIDE BACK SIDE RL 94v-0
E329419
1029
LFa
Sn-Ag-Cu
Ps-1
K4458TP
4458ZZ
0921FM
104863
ee03A
SHORT STRIP (30 LED's)
FRONT SIDE BACK SIDE
RL 94v-0
E329419
1025 LFa
Sn-Ag-Cu
Ps-1
K4459TP
4459ZZ
0714FM
302213
Mm05A

POWER LIGHT FLASHES ONE SHORT AND ONE LONG FLASH.
What is the problem? THE PROBLEM IS THAT ONE OF THE LED's STRIPS IS BAD!

SHARP AQUOS LC60LE810UN RESET INSTRUCTIONS

1)Plug in TV to electric current First then wait until LED start flashing.
2)Press Volume DOWN HOLD ALL three buttons until LED stops flashing and then release.

·This will reset the TV in order to fix the problem.
·THE FIX IS TO REPLACE ONE OF THE LED's. You need to open the back of the TV and you will also need to remove the front cover and panel to get to the LEDs. The TV will need to be placed facedown and on the backside. This is a 2 person job to turn the TV on its sides. Be careful with the white computer connectors (wide white strip) at the base of the TV where the TV stand sits. You will need to disconnect this in order to get to the LED's.
Once you have the LED's exposed, you will need to unplug one by one by placing the new strip next to it until the unit turns on. You will have to use the RESET procedure above if the Power lite flashes. The Power lite MUST BE ON SOLID - no blinking in order to test the strips. The LED's will flash, but still one of them will be burned. Even if you stare and all the strip light-up, you will still need to check one-by-one!
Once the TV lights up, your face will also light up with joy! Put everything back together and you are set. If you need the complete instructions which come from Sharp as to how to disassemble the unit, please send me an e-mail to [email protected]. Please note I don't check this address daily, so a few days wait may take for you to receive the instructions.

Where can you buy the LED's - try searching
Sharp LCD/LED parts web site -
Copy this link:

http://www.encompassparts.com/item/8459814/SHARP/RUNTK4459TPZZ/LEDPWBUNIT(LC-60LE810UN),_X4

Yahoo.com or Google.com for resellers.
SHARP AQUOS LC60LE810UN LCD STRIP INFORMATION

LONG STRIP (49 LED's)
FRONT SIDE BACK SIDE RL 94v-0
E329419
1029
LFa
Sn-Ag-Cu
Ps-1
K4458TP
4458ZZ
0921FM
104863
ee03A
SHORT STRIP (30 LED's)
FRONT SIDE BACK SIDE
RL 94v-0
E329419
1025 LFa
Sn-Ag-Cu
Ps-1
K4459TP
4459ZZ
0714FM
302213
Mm05A