Dead Samsung 46" LED (model UN46C6300SFXZA)

[freakaftr8]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Don't know about instructions but never touched an led Samsung yet. The two sharps I did are.pretty straight forward. Start by placing the tv face down. Remove all wires and screws Jeeping.the front bezel on.
Next carefully with another person pick up the chassis out of the bezel. There may be retaining clips holding the chassis in. Once thus is done lay chassis face up on carpet. Start removing the screws holding frame to panel. Carefully remove e frame off chassis. Carefully.disconnect white ribbons going from lcd panel to tcon board. Tape the lcd carriers to the screen to keep them from flopping around. The carriers are the boards attached to the panel. Use caution with these. O e slipup and the panel is toast. Remove panel. Two people should do this. Now remove the black.plastic framing off the chassis. Now you can remove the diffusers. Remember which way and in order they go. by now you should see the LED strips. I know that this is a daunting job but if all goes well you will get to this point and I be able to test the LED's with a voltmeter and diode check setting.

I have removed LCD panels out of Samsung's before but not the LED models although most LED model TVs appear to be similar in design. That's the way I did it

oh yeah in about the diffusers don't touch them anymore than you have to as a matter of fact use rubber gloves because the slightest smudge mark will show up in the screen when it's back together and it is super hard to clean One of these sheets.

[Ltank]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

If one was to clean one. What is the best product to use? Currious because I just took one apart for the first time and I did put my hands on it trying to get it unstuck from the tape holding it all together.

[Jidis]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Thanks for all the info freakaftr8!

There may be retaining clips holding the chassis in.

Yeah, that's what I'm figuring maybe. There's weird little metal black things wedged down in the body that might be that. Most of the accessible screws are doing metal to metal duty and don't seem to be holding the bezel on.

I may wait until the morning when I can recruit a helper, but try to get a good look at what I'm up against tonight.

George

[mmartell]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Once you remove the screws from the outer frame and remove it you will see the plastic clips which must be released to pull up the back panel. They are just tension clips you can use your fingernail to pull it back but it's best to pull up gently on the back panel while doing it to get the panel passed the detent position of the clips. It's very intuitive once you get the metal frame out of the way.

[Jidis]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Once you remove the screws from the outer frame

Dumb question, but "outer frame" meaning the back cover? It looks like the threaded things that the back cover screws into are the actual clips you're talking about. It looks like if I pry outward on them all the metal guts of the screen can be lifted out. I've got a bad feeling something just popped out of it from the face when I did the side, but damn if I see where it went.

George

[mmartell]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Ya we are collectively having semantics issues here...

By Bezel I mean the decorative plastic piece around the outside of the screen which may have the manufacturers name and in the case of my UN55D6000 has the ir board glued to it.

By Frame I mean the metal piece UNDER the bezel that goes around the perimeter of the panel giving it added strength.

Back Cover we all know. The piece we are interested in here might be called a Back Plate ? Or Backing Plate maybe ?

So in my post above where I said outer frame read that as Frame and where I said back cover I mean the Back Plate (the part we are trying to remove to get to the led strips)

Whew!

That being said you should post a picture because I have no idea what you are talking about lol.

[Jidis]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Thanks mmartell,

Yeah, my description probably wasn't the greatest either. Here's a shot of one of the clips. Are these the only thing holding the bezel on? I guess once that's off I'll find the rest of the stuff you're talking about, but like I say, I'll probably tackle it in the morning.

George

[mmartell]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Keep in mind I have a D series and can't compare it to yours as I don't have one. But if there are two of these, one per side about halfway up then a little pressure away from the screen and the bezel will pop right off. I also had two screws under the mount which prevented me from removingthe bezel with the stand attached.

But I thought you were further along. These are the clips I was referring to - under the frame, which is under the bezel.

[freakaftr8]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

If one was to clean one. What is the best product to use? Currious because I just took one apart for the first time and I did put my hands on it trying to get it unstuck from the tape holding it all together.

Just use a damp wash cloth with water. That's all. No chemicals like windex. That will ruin the finish.

[mmartell]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Sounds like a microfiber cloth and distilled water would do the trick.

[Jidis]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

I'm halfway in this thing now. Thanks mmartell!

The bezel and frame are now off. I'm gonna break for a bit to eat, and get back on it very slowly to keep from screwing anything up.

There are clips around the edge on mine, but I'm wondering how I need to approach things to safely get to the light strips. It's got those two fragile looking long thin PCBs hanging off the bottom which connect to the T-con board. Do I lay it face down, unsnap all the clips and lift the bulk of it away from the glass/screen part?

Thanks,

George

<EDIT> freakaftr8's instructions are now making a bit more sense to me, but I can't tell if he's still got the panel face-up at the point I'm at now.

[freakaftr8]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

yes you should be face up now. Tape the carriers (the two delicate boards connected to the LCD to the screen after you flip it around).

[freakaftr8]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Then of course start removing the 1000 (exaggeration) or so screws from the metal frame surrounding the LCD panel but remove the black bezel first that's clipped in.

[freakaftr8]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Actually let me clarify.. Everything needs to be free and clear from the panel as in the panel should be ready to lift out when you tape the carriers to the screen.

[mmartell]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Ya I did it face down so I wouldn't have to mess with the layers or disturb the lcd panel itself and remove only the part I needed. A little tougher probably, but doable. Only the diffuser (taped to the led strips) comes up with the back plate if you're careful.

[Jidis]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

Well, I don't know if this is good news or bad for me, but I appear to have two hundred and fifty-six nice healthy white lights. I probed each and every one with 3.3VDC through a 470ohm resistor.

So who's the suspect now, the PSU board?

BTW, ShopJimmy finally got back with me and said the same thing about unplugging CN201 from the main to see if the lights worked, and that it was the power board if not.

Let me know what to do, and again, you guys help has been awesome.

George

PS- That was some stressful s*#@! Hope I don't have to go through that again (and that I got the thing back together properly ).

[mmartell]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

When I pulled my strip again tonight to look for an open led I found all leds to be lighting. Scratched my head for a minute then devised a new test. Instead of putting the leads on either side of the led I put one on the NEXT led just across the small gap between them since they are in series. This way I could test the led AND the connection between them. Sure enough I had a dead spot between two leds.

Had what looked like corrosion or contamination of some sort. May have happened when I had the strip pulled from an earlier repair but can't say for sure. One of those leds also happened to be dim so I replaced it and wired in a jumper.

You could have got a faulty PS wouldn't be the first time. I would try another before going back in the panel and double checking the leds.

[Jidis]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

You could have got a faulty PS wouldn't be the first time. I would try another before going back in the panel and double checking the leds.

Thanks mmartell, I probably will. It seems to be about the cheapest of all the boards for this thing.

George

[freakaftr8]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

I found when testing LEDs with a voltmeter in diode check mode even if the led lights up also note what the meter is reading g at the same time. Somewhere in the range of 5kohms is normal i think. If a reading is different suspect a bad led. Even if it lights up.

[Jidis]

Re: Dead Samsung 46" LED (model UN46C6300SFXZA)

It seems to be about the cheapest of all the boards for this thing.

Damn, I thought I was good to go on that BuyQual place someone directed me to. Looks like their shipping charge is almost the price of the board, then you'd probably have to pay it again if anything didn't work.

I see "repair kits" for the various Samsung power supplies all over eBay. I wonder if that's an indication that someone actually has a good idea of what croaks on these particular boards. The only pictures look like two or three regulators and a few smaller caps, but I'm not sure if that's the actual kit contents.

George