Samsung UN60D6000SF LED TV Sound but blue screen

[TubeJunkie]

Hi. I have a Samsung UN60D6000SF LED TV. Has good Sound but blue screen. The red power light flashes when starting up. Which normally means power supply problem? Anyone have any advice or experience with this? Look how skinny the power supply caps are! Could I have a bad T-con board? I'd love to have a schematic on this model. I took some voltage readings:

Samsung 60" LCD
Voltage readings:

From PS board to main board:
1. 5.33v
2. 5.33v
3. 0v
4. 17.1v
5. 12.8v
6. 12.8v
7. 0v
8. 3.28v
9. 3.28v
10. 3.28v
_____________________

[tom66]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

blue screen - is it only a faint dark blue or a full on, blue sort of like "no signal" screen old VCRs/TVs had?

[TubeJunkie]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

It's a faint blue that kinda gets lighter and darker. Much like this guys video
http://youtu.be/s2hLKzdyDWU

[tom66]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

I'd say T-con or panel failure.

[Shinju]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Try disconnecting the tft ribbons connecting the t-con to to the panel, try one side power it on with a source to see if you get a picture on the side that is still connected to the t-con.

I had a UN46 doing what yours is and it ended up being a t-con failure. But make sure your panel doesn't have moisture damage on the tft board connecting to the panel itself or you might blow another t-con if there is damage.

[TubeJunkie]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Try disconnecting the tft ribbons connecting the t-con to to the panel, try one side power it on with a source to see if you get a picture on the side that is still connected to the t-con.

I had a UN46 doing what yours is and it ended up being a t-con failure. But make sure your panel doesn't have moisture damage on the tft board connecting to the panel itself or you might blow another t-con if there is damage.

Yes! I unhooked one side of the t-con board and now I have a picture on one side of the screen. So, I have a bad T-Con board. Correct?

Also, I noticed a wet substance on the big black processor in the center of the T-Con board, after the above mentioned test. What does that moisture mean? See pic

[tom66]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

No, this indictes that the LCD panel is shorted on one side. Unfortunately in most cases this will not be repairable. Sorry.

The moisture there is just left over from the thermal SIL pad... nothing to worry about.

[TubeJunkie]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Awe shucks! Not the news I was hoping for. Thanks for your help guys. I really appreciate your time, and sharing of knowledge.

[tom66]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Still, it would be worth opening up the panel just to check.
9 times out of 10 it's not fixable but we've seen some success stories where water damage can be fixed.
And one case of an easy fix, with a shorted MLCC.
If it's scrap anyway... may as well try.

[TubeJunkie]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Still, it would be worth opening up the panel just to check.
9 times out of 10 it's not fixable but we've seen some success stories where water damage can be fixed.
And one case of an easy fix, with a shorted MLCC.
If it's scrap anyway... may as well try.

Hmmm. I may just try it. I'venever opened a panel before. What would I be looking for? Type of Damage?

[tom66]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Signs of corrosion, usually white in nature around the tabs or components. Possible damage to the traces. If it's only components in the area affected it MAY be rescuable...

[TubeJunkie]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Signs of corrosion, usually white in nature around the tabs or components. Possible damage to the traces. If it's only components in the area affected it MAY be rescuable...

Ok tom66, I've gotten this far. I see nothing out of the ordinary on these panel boards. Do I need to go further? Like complete disassembly of the panel?

[Shinju]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Is that all the tab bonds shown in that picture? Also, Sharp TFT board in a samsung, first time I have seen that!

[TubeJunkie]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Those white tabs? They're all around each side. Is that what I need to do, take off the back of the panel? Oh, the T-con board is a Sharp

[Shinju]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

No, the tabs that are glued to the green TFT board that wrap around and are attached to the LCD screen.

[TubeJunkie]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

No, the tabs that are glued to the green TFT board that wrap around and are attached to the LCD screen.

Yes, that's all that I know of. What should do next?

[Shinju]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Retake the photo and include everyone of those tab ribbons on both left and right boards as close as you can get. I can see your photo cut off a few per side.

[tom66]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Sharp are really good at making massive LCD panels so I guess that's why it uses a Sharp panel. Rare sight, though...

[TubeJunkie]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Retake the photo and include everyone of those tab ribbons on both left and right boards as close as you can get. I can see your photo cut off a few per side.

I'm having trouble uploading pics, all of the sudden. I'll try it from another computer.

[TubeJunkie]

Re: Samsung UN60D6000SF LED TV Sound but blue screen

Disregard the first pic. There are a total of 8 pics in the two zip files.

tom66 ; That sounds like a good idea too. I may try that later.

I also want to mention, when I previously unhooked one side of the T-con board, the one side of the screen had a normal picture. Then when I tried the other side, the picture showed up, then faded to black. Not sure if this is useful info, but thought I would mention it. Thanks