Toshiba 46L5200U LED Replacement Help Needed

[Treydogg77]

I took the TV apart to see how many LEDs were out and found one! What's the easiest way to remove one of these LEDs? I have a light strip from another TV that I can use to replace the LED. I am having trouble removing the led without damaging it. Any help or advice is greatly appreciated!

[Hamie]

Re: Toshiba 46L5200U LED Replacement Help Needed

With a heatgun heat up the underside of the board for about 40 seconds.
Then slide the faulty led off the strip .

[Hamie]

Re: Toshiba 46L5200U LED Replacement Help Needed

Do not use force. It will just slide when it's good and ready.

[ReeceyBurger123]

Re: Toshiba 46L5200U LED Replacement Help Needed

Watch this video there are two parts and they will show you have to do it:
https://m.youtube.com/watch?v=hh3z_dkkcUM

[Treydogg77]

Re: Toshiba 46L5200U LED Replacement Help Needed

Thanks guys! I will give it a try and let you know how it goes!

[ReeceyBurger123]

Re: Toshiba 46L5200U LED Replacement Help Needed

Great stuff always use hot air for leds solder iron just melts them, be sure to add some flux when you solder the replacement in to make sure it has a good connection keep us posted

[Treydogg77]

Re: Toshiba 46L5200U LED Replacement Help Needed

Okay the led I had was to small and it would have failed due to much power. Now I did the same thing as the gentleman did in the video. Soldered a zener diode in. Now the back lights come on for 2 secs and shuts off! I checked the zener diode and it's good. What now guys?

[Treydogg77]

Re: Toshiba 46L5200U LED Replacement Help Needed

Update used a Led out of a LG that could handle the voltage. Pardon my horrific soldering job as it's getting late and Cuervo is starting to win the battle.

[Treydogg77]

Re: Toshiba 46L5200U LED Replacement Help Needed

Fully lit

[Hamie]

Re: Toshiba 46L5200U LED Replacement Help Needed

Nice,

Stange the zener didn't work.

What was the voltage? Think it would need a 6.2 or 6.8v zener.

[budm]

Re: Toshiba 46L5200U LED Replacement Help Needed

Nice,

Stange the zener didn't work.

What was the voltage? Think it would need a 6.2 or 6.8v zener.

He needs to find out if the LED he has is dual LED or single LED, and also if the Zener is put in correct way which is reverse bias.

[ReeceyBurger123]

Re: Toshiba 46L5200U LED Replacement Help Needed

Did you reverse bias the Zener you need to on a set up like this ?

[ReeceyBurger123]

Re: Toshiba 46L5200U LED Replacement Help Needed

Also good work soldering isnt the best but good for practice nice job

[Treydogg77]

Re: Toshiba 46L5200U LED Replacement Help Needed

Sorry for the delay gentlemen, I did not have the zener in backwards, it was actually was 3v where as it needs to be 6volt. Also about 18" of the screen was perfectly lit and the rest was about 25% lit. The paper backing and plexi wasn't Perfectly aligned! I finally got time to break the tv back down and install the new zener diode. Currently I'm trying to get those right! I've replaced the lcd bulbs in 4 different sets, and thought that was kinda a pain in the hip, but this led tv takes the take for being a pain in the hip! Be very cautious and rack the assembly out another table as you dissasemble the set! Also reference the youtube vid as you do the reassemble. As the paper backing and plexiglass has to be aligned perfect! Thanks for all the help with this set, I just hope I can get the dang thing back together correctly. :-/

[Treydogg77]

Re: Toshiba 46L5200U LED Replacement Help Needed

After putting the tv back together the diode broke loose, and shorted 5 LEDs out. That puts me back to square one again... I've searched and searched the web for a replacement LED strip, and haven't had any luck. On a last ditch effort I posted an ad on Alibaba for the LED strip. The part number that I used to research the led strip is LJ64-03495A. If I get a hit off that site I will post a link to where badcap members can purchase them. Once again I would like to thank everyone!

T-Dub

[adgor]

Re: Toshiba 46L5200U LED Replacement Help Needed

More bad news for this model. Here is a link from the Toshiba forum....

http://forums.toshiba.com/t5/Televis...nt/td-p/528349
I haven't found any new led assemblies for these and it looks like a partial repair of any current strip will be a temporary solution because it's likely that more LEDs have already been stressed. However a low (< 60) backlight setting is allowing two 46L5200U models to stay on that I have worked on. The first one with one shorted LED I added a 6.2v zener to the wire for that string near the plug on the LED driver board. The second one had no shorts but would stay on in the Movie mode (lower backlight, brightness, and contrast).

[Louis82]

Re: Toshiba 46L5200U LED Replacement Help Needed

Hello there.
Any advice on the replacement of a LED. I have a samsung 60" tv with only one dead led. I put another one that look physically the same but comes from a 32" tv. It worked but not sure for how long. Any idea if it will last ?
Thank you

[budm]

Re: Toshiba 46L5200U LED Replacement Help Needed

It probably will last if you turn down the backligts (NOT BRIGHTNESS) down so the drive current will be less.

[Louis82]

Re: Toshiba 46L5200U LED Replacement Help Needed

Thank you Budm

[Louis82]

Re: Toshiba 46L5200U LED Replacement Help Needed

Update: When putting everything back together, I cracked the screen.
Lesson learned: All 60" tv must be handle by atleast 2 people.