Samsung UN46B7000 LED TV, no picture.

[tonyynguyen]

Hey guys, I have a Samsung UN46B7000 LED Tv. Powers on, audio works but no image. I can see the backlighting on the display but no image comes on. I narrow it down to the T Con board (BN81-02358A). But I just want some advice from you guys before I order the part. And possibly troubleshoot the board itself.

[japlytic]

Re: Samsung UN46B7000 LED TV, no picture.

I'm interested in the unusually long and narrow black electrolytics flat against the board. The manufacturer appears to be Rubycon, but what are the series of these units? Never before have I seen units which are unusually long and narrow.

[PlainBill]

Re: Samsung UN46B7000 LED TV, no picture.

I'm interested in the unusually long and narrow black electrolytics flat against the board. The manufacturer appears to be Rubycon, but what are the series of these units? Never before have I seen units which are unusually long and narrow.

I was looking at those also. There are a number of innovations on this set to make it ultra thin. Stupid, in my opinion. But the marketing department has to have something to brag about and justify the high premium for LED backlit TVs.

PlainBill

[Dgtech]

Re: Samsung UN46B7000 LED TV, no picture.

The T-Con board is the cheaper of the two on Ebay at $30. However, If you find that it isnt working after that one, the other (pd4612f1) is about $69. I'd be inclined to simply buy both for $100, and then use them to help me find the defective component on the other set. Then sell them on Ebay. Hopefully, you dont get some defective boards from an ebay seller that had the same exact problem.

[Scenic]

Re: Samsung UN46B7000 LED TV, no picture.

I was looking at those also. There are a number of innovations on this set to make it ultra thin. Stupid, in my opinion. But the marketing department has to have something to brag about and justify the high premium for LED backlit TVs.

PlainBill

those strange caps reminded me of those nippons..

http://bambooz.pytalhost.net/badcaps/NCC-FTK.jpg

Brand: Nippon ChemiCon
Series: FTK
Capacity: 82uF
Voltage: 400V
Temp: 105°C
Grid: 7.5mm
Size: 13x25x40mm
RoHS compliant: No
i could get 10pcs. of those for 8eur (about 10US$) incl. shipping. stumbled across them in a shop..

not really related to this topic though..

[tonyynguyen]

Re: Samsung UN46B7000 LED TV, no picture.

They are Rubycon KXW

The T-Con board is the cheaper of the two on Ebay at $30. However, If you find that it isnt working after that one, the other (pd4612f1) is about $69. I'd be inclined to simply buy both for $100, and then use them to help me find the defective component on the other set. Then sell them on Ebay. Hopefully, you dont get some defective boards from an ebay seller that had the same exact problem.

Where did you find it for $30? The cheapest I found was like $80.

[Agent24]

Re: Samsung UN46B7000 LED TV, no picture.

I'm interested in the unusually long and narrow black electrolytics flat against the board. The manufacturer appears to be Rubycon, but what are the series of these units? Never before have I seen units which are unusually long and narrow.

There's another thread on the forum somewhere about a Samsung with this ultra-flat design actually...

[Dgtech]

Re: Samsung UN46B7000 LED TV, no picture.

Sorry, earlier I had said that you could get the UN46B7000 t-con board for 30 something but that was the UN46B6000 T-con board. A whole different design than the one you need.

[seniorgode]

Re: Samsung UN46B7000 LED TV, no picture.

Hi I have a Samsung Plasma TV S42SD-YD05, when i switch it on the blue will start from left to right to fill the screen but at 3/4 it stops when i add picture it becomes black and it starts to cover the whole screen untill i can only see shadows or nothing at all. when i opened it i noticed there are 4 250v 1000uf capacitors 2 of them are bulging could this be the problem or it has to do with the buffers. please help world cup starting in 3 days time.
senior gode

[Dgtech]

Re: Samsung UN46B7000 LED TV, no picture.

If they are bulging, they need to be changed. However we dont know if thats the only thing that needs changed/tested until you post a picture of the board in question. I hope you have an electronics part store nearby if this is needed soon.

[Agent24]

Re: Samsung UN46B7000 LED TV, no picture.

Hi I have a Samsung Plasma TV S42SD-YD05, when i switch it on the blue will start from left to right to fill the screen but at 3/4 it stops when i add picture it becomes black and it starts to cover the whole screen untill i can only see shadows or nothing at all. when i opened it i noticed there are 4 250v 1000uf capacitors 2 of them are bulging could this be the problem or it has to do with the buffers. please help world cup starting in 3 days time.
senior gode

You should start your own thread, you will get better help if you do because more people will see it.

Anyway, those 2 bulging capacitors have definitely failed. So you will need to replace them. I don't know if it will fix the problem, but they will certainly be causing some problem.

[iponuri]

Re: Samsung UN46B7000 LED TV, no picture.

Hi I have exactly same problem on my samsung led tv, just wondering if you had it fixed?

[Agent24]

Re: Samsung UN46B7000 LED TV, no picture.

Hi I have exactly same problem on my samsung led tv, just wondering if you had it fixed?

Probably better to start your own brand-new topic about your own TV and then reference this one than start posting in someone else's old thread where a lot of people won't see it.