Samsung 75 LED UN75F6300

[Gv137a]

Re: Samsung 75 LED UN75F6300

Is this the type of replacement part?
http://www.ebay.com/itm/SAMSUNG-UN75...0AAOSwBahVaPb9

Is the above the correct led strip?

Are there any vidieos on i.e. youtube or on this site, that show this type of repair?

For those who have successfully repired a dim area, how did you support the TV while disassemblying?

Im considering tyring to repiar this but would like to have that parts on hand

Thank you

[budm]

Re: Samsung 75 LED UN75F6300

I would get the make and model of the LCD panel and then search for the LED strips made for that panel.
Not sure if this what you have but it is < the one on your EBAY LINK:
http://www.electronica-usa.com/product_BN96-26413C.html

[freakaftr8]

Re: Samsung 75 LED UN75F6300

Yes I agree make sure that the part number matches your model TV since mine was a 7100 series I notice that your model uses the same strips however there are three parts that make up an LED strip that spans horizontally. That could be the bad one or could be the other section of that strip if you notice where the black connector connects to the next trip kinda like a chain series system

[Gv137a]

Re: Samsung 75 LED UN75F6300

Thanks for the link

The complete model number is
UN75F6300AFXZA
Version UH02

My guess is that the dim are in the first pic consist of one bar?
Its strange that the very top edge is not dim, it starts about 1/2 then the dim area of about 4 inches.

[budm]

Re: Samsung 75 LED UN75F6300

There should be a sticker for the LCD panel make and model, that will be what I would use for verification since same TV model can use more than one version or maker of the LCD panel.
The real number will be the one printed on the LED strip itself.

[Gv137a]

Re: Samsung 75 LED UN75F6300

Heres a pic if the sticker




Any links on this site on tear down and replacing these led? Video or picture thread?

Id like to see the they are tied in together.

[budm]

Re: Samsung 75 LED UN75F6300

The sticker for the LCD panel will on the back of the LCD panel.
I can see it on the left of the power supply board (to the right of the black flat ribbon cable).

[Gv137a]

Re: Samsung 75 LED UN75F6300

Sorry about that

Maybe it was the sticker in this pic I took yesterday



.?

I didnt get a good infocus shot of it

Ill have to move the set out and oper her up again

Thanks again

[budm]

Re: Samsung 75 LED UN75F6300

Yes, that is the sticker to tell you the make and model of the LCD panel.

[freakaftr8]

Re: Samsung 75 LED UN75F6300

The backlight system On these TVs work in pairs of threes so what you have going on is the first three backlight LED strips are out because you have either one or more LEDs open or shorted on any three of the strips.

Thanks for the link

The complete model number is
UN75F6300AFXZA
Version UH02

My guess is that the dim are in the first pic consist of one bar?
Its strange that the very top edge is not dim, it starts about 1/2 then the dim area of about 4 inches.

[Gv137a]

Re: Samsung 75 LED UN75F6300

Thank you for taking the time for that explanation


So would your recomend have 3 replacement bars on hand before attempting the repair?

I still have a little difficulty visualizing the assembly
Once I have it open I'm sure it will click.

Im a maintenance guy by trade but not an electrician. I have done my own auto electrics.

Right now the tv works with the dim area
My fear is that I will open her up and maybe cause more damage.

Thats why I have so many questions, even the basic stuff.

To me this tv is still new and should not be having these problems.

I will get the l.e.d s/n and post it.

Thanks again

[freakaftr8]

Re: Samsung 75 LED UN75F6300

In your case unfortunately it is really hard to tell which part of each of the three strips could be causing the problem the only thing I can advise you is to test each individual led with a voltmeter set in diode check mode. This load wallahi led to light up under testing but first we need to figure out how you're going to be able to open this thing up. Not an easy job. You need to completely remove the back.

You need to lay the TV down now face up so the screen is facing up. They will be tape around the panel frame he had to remove all the tape and that will expose all the screws holding the grey bezel to the LCD screen

There are like two dozen screws that need to be removed from the LCD bezel. Once you get that done have a helper carefully lift the bezel up off of the screen and away from the TV. The next step is to unscrew the driver boards that connect to the LCD screen on the bottom of the TV. Once you do this you can carefully disconnect the white ribbon cables that connect those driver Boards to the t-con bored. Mcd s you need to make sure that all cables are free and away from the panel this is a very tedious process you cannot tug on any of the ribbons because you will destroy the panel. Now if you can get the driver boards free in carefully hanging down so they're not attached anything anymore you can take them to the panel this wrap them around forward ways and take them so they're not hanging when you have to lift the panel up and out of the TV. The next step is to get about three or four guys and carefully lift the LCD out of the TV in live somewhere safe and flat so it's not flexed. Then you have to remove all the black plastic Plastic panel frame pieces that hold the panel steady And in place. These just simply unsnap and move on the way. Take note at which one is coming off of what side. Now that you got this out of the way the hard part is over. Now you have to remove the white diffuser sheets out of the TV notice that there are two very thin sheets and one very thick piece of plastic the whole thing is to come out as a whole don't separate the sheets you will get dust between them And when it goes to reassembling your TV you will see it and it will look horrible. Anyway now that you're at this point You should be seeing the LEDs Now. At this point you have these plastic retainer clips that hold the diffuser from falling back in the panel they are wedge-shaped in you twisting counterclockwise 1/4 turn and they pop right out. Only need to remove enough to peel the white plastic sheet back to expose the first three LED strips since those are the ones that are not working.. access point you're safe to take a voltmeter and put it in diode check mode and you will see copper points on the LED strips we can test across for each individual led. Technically this is the only way you're going to find out which one is bad unfortunately the TV will not work when you remove a strip because of a balancing System. If you get this TV to this point start taking pictures of your progress so you remember how to put it back together. This is a very daunting process but if done correctly in very carefully you will fix your TV. Even for someone like me is experiences I am at TV repair still makes me nervous when I have to disassemble a 75 inch LCD screen. The difference is I had to do it by myself

[Gv137a]

Re: Samsung 75 LED UN75F6300

Thanks

Im pretty sure i will not be able to do this after reading that

Ill ask my electrician friend at work. Ill have him read this thread.

I would hate to ask him to help then have the set go bad.

Ill get the s/n off the led monday

This will probably be something ill have to live with

Thanks

[jessekilgore]

Re: Samsung 75 LED UN75F6300

Thanks

Im pretty sure i will not be able to do this after reading that

Ill ask my electrician friend at work. Ill have him read this thread.

I would hate to ask him to help then have the set go bad.

Ill get the s/n off the led monday

This will probably be something ill have to live with

Thanks

Hello GV137a, did you get this repair done? I have a strip of LEDs to replace this tomorrow. I was wonding:

How did you determine which LED strip was bad? I purchased part numbers BN96-26413A
BN96-26413B
BN96-26413C
these make up one full strip to replace which ever is bad in the row.

I just dont know how to tell which is bad? Will the LED be dark or mis colored when i open it up and take a look, or will i have to supply power to the stripe and disconnect the main / mother board and light them up to see which is the bad one?

Thanks
-jes

[brucetv]

Re: Samsung 75 LED UN75F6300

We have a service contract with a sports bar that has 12 of these beasts and wanted to point out a problem we have seen twice on this model. I have found signs of two pins arcing inside the connector from the Power Supply to the Main Board. I'll include pictures of what damage it does and in our case was causing a intermittent shut down. We don't know if it's a defect in the cable or in the Power Supply but we have gotten away with replacing the 20 pin connector from a old board on the Power Supply and ordering a new cable. I like to tape the connectors and tape the cables down to the chassis good because they are in a loud environment with a lot of vibration. We thought at first a bad led was shorting and causing the shutdown but we used a led tester and they all fired up fine so we knew there was another problem.

[Namenotfound]

Re: Samsung 75 LED UN75F6300

In your case unfortunately it is really hard to tell which part of each of the three strips could be causing the problem the only thing I can advise you is to test each individual led with a voltmeter set in diode check mode. This load wallahi led to light up under testing but first we need to figure out how you're going to be able to open this thing up. Not an easy job. You need to completely remove the back.

You need to lay the TV down now face up so the screen is facing up. They will be tape around the panel frame he had to remove all the tape and that will expose all the screws holding the grey bezel to the LCD screen

There are like two dozen screws that need to be removed from the LCD bezel. Once you get that done have a helper carefully lift the bezel up off of the screen and away from the TV. The next step is to unscrew the driver boards that connect to the LCD screen on the bottom of the TV. Once you do this you can carefully disconnect the white ribbon cables that connect those driver Boards to the t-con bored. Mcd s you need to make sure that all cables are free and away from the panel this is a very tedious process you cannot tug on any of the ribbons because you will destroy the panel. Now if you can get the driver boards free in carefully hanging down so they're not attached anything anymore you can take them to the panel this wrap them around forward ways and take them so they're not hanging when you have to lift the panel up and out of the TV. The next step is to get about three or four guys and carefully lift the LCD out of the TV in live somewhere safe and flat so it's not flexed. Then you have to remove all the black plastic Plastic panel frame pieces that hold the panel steady And in place. These just simply unsnap and move on the way. Take note at which one is coming off of what side. Now that you got this out of the way the hard part is over. Now you have to remove the white diffuser sheets out of the TV notice that there are two very thin sheets and one very thick piece of plastic the whole thing is to come out as a whole don't separate the sheets you will get dust between them And when it goes to reassembling your TV you will see it and it will look horrible. Anyway now that you're at this point You should be seeing the LEDs Now. At this point you have these plastic retainer clips that hold the diffuser from falling back in the panel they are wedge-shaped in you twisting counterclockwise 1/4 turn and they pop right out. Only need to remove enough to peel the white plastic sheet back to expose the first three LED strips since those are the ones that are not working.. access point you're safe to take a voltmeter and put it in diode check mode and you will see copper points on the LED strips we can test across for each individual led. Technically this is the only way you're going to find out which one is bad unfortunately the TV will not work when you remove a strip because of a balancing System. If you get this TV to this point start taking pictures of your progress so you remember how to put it back together. This is a very daunting process but if done correctly in very carefully you will fix your TV. Even for someone like me is experiences I am at TV repair still makes me nervous when I have to disassemble a 75 inch LCD screen. The difference is I had to do it by myself

I just inhereited this same tv with the same problem, and I'm limited in space. If i remove the screws from the bottom and set it on the bottom; will i be able to continue the disassembly?

[Namenotfound]

Re: Samsung 75 LED UN75F6300

I dont know where my last post went but I was able to disassemble from the back . However, I will reassemble towards the front. The problem seems obvious, but I will test the others as soon as figure out how/where. Heres some pics of the led and the damage. The previous owner said it wet out in two phases. First a dark line across the center then the whole top. The last photo is an led. I have no clue where the rest of the blob went. The second to last photo is what I'm assuming is a fuse. Hopefully I only need one strip!

[danno8]

Re: Samsung 75 LED UN75F6300

Was your repair successful? I have the same issue with the same model TV.

[dskall]

Re: Samsung 75 LED UN75F6300

They should go back to ccfl's. There's over 300 potential fail points in a 75" led tv

[Namenotfound]

Re: Samsung 75 LED UN75F6300

sorry I have not completed repairs... economical downturns (I'm broke and cannot find another cheap strip also i was rushed by my wife and haphazardly bought the wrong strip)