LGLN575s-ZE backlight

[chrle]

hello,I buy this tv with no backlight,ordered leds from ebay,change burned leds,

tv power on with dark spots ,on screen,all led are working.

tv is powered 5 minutes then shut down and no backlight again,leds burned again.

what cause led to burn ?

wrong leds ?

[budm]

Re: LGLN575s-ZE backlight

Do you have the specification of the replacement LEDs?
So the replacement LEDs failed again or the other original LEDs failed?
We need more details and pictures.

[chrle]

Re: LGLN575s-ZE backlight

leds ---> LATWT470RELZK

ordered from ebay ,ordered for 6916L-1214A backlight strip.

will post pictures when I change leds

[dskall]

Re: LGLN575s-ZE backlight

Sounds like you did not replace all bad leds.

[chrle]

Re: LGLN575s-ZE backlight

OK burned leds are changed,with new.all were different big leds.

now backlight not turning off and not burning

but I have problem when I put filters back (look on picture).

[chrle]

Re: LGLN575s-ZE backlight

and changed led are little different colour

[budm]

Re: LGLN575s-ZE backlight

What are those small black ring on the LED's LENS?
https://www.badcaps.net/forum/attach...5&d=1498750427

BTW, make sure to go into on screen setup and turn down the Backlights level (not Brightness) as low as possible, that will extend the life of the LEDs.

[chrle]

Re: LGLN575s-ZE backlight

What are those small black ring on the LED's LENS?
https://www.badcaps.net/forum/attach...5&d=1498750427

BTW, make sure to go into on screen setup and turn down the Backlights level (not Brightness) as low as possible, that will extend the life of the LEDs.

I changed plastic led lens from another LG tv.

[dskall]

Re: LGLN575s-ZE backlight

Those are not correct color. Also care must be taken to center lens over led

[chrle]

Re: LGLN575s-ZE backlight

this is now my big problem

[chrle]

Re: LGLN575s-ZE backlight

Those are not correct color. Also care must be taken to center lens over led

omg,yes now I need to take down lenses and center over led,and find what colour are original leds

[chrle]

Re: LGLN575s-ZE backlight

ok what to use to glue led lens?it is very difficult to center lens.

[dskall]

Re: LGLN575s-ZE backlight

I apply power to led. Makes it easy to center. Looking straight down no bright light coming out. I am still experimenting with glue

[zomi]

Re: LGLN575s-ZE backlight

try flexible superglue

[tvsteve2]

Re: LGLN575s-ZE backlight

Locktite makes a supergel in a plastic bottle that you squeeze two blue side bars to dispense the glue. Also the old glue spots need scraped off smooth and the lenses put on level.