Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

[nramo]

Howdy, I am trying to get some information (part#/rating) on a capacitor on the Samsung BN44-00424A Power Supply Board. The capacitor is CP803, it blew out and I'm hoping that replacing it will fix my problem . Thanks for any assistance in advance.

[budm]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

That is the high voltage snubber cap for the diode DP801.
Did it blow up badly that you cannot read any printing on it? Picture of it may help
http://www.shopjimmy.com/samsung-bn4...pply-board.htm

[nramo]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

Thanks Budm, I'll try to upload a picture later tonight. Yes, it blew up and all that is left is some parts of the blue. There is charring all around it, but none of the other parts seem to have received damage.

[nramo]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

See attached for pics. Looking for part info. Thx.

[budm]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

Did it blow the fuses on the board?

[budm]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

Try PM this guy to see if he can look at that cap for you:
https://www.badcaps.net/forum/showth...24A#post426926

[nramo]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

Thanks, I just sent a PM to the guy, as for the fuse, I'll have to check it out, unfortunately I don't have a multi-meter at the moment but will be sure to check it out once I do.

[budm]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

I just look at the diagram of BN44-00428B, it has the same setup as your board. That cap is 220pF 1000V.

I would go for 2000V for more reliability.

1000V, 5mm lead spacing
http://www.mouser.com/ProductDetail/...HWvUmA9o8FVeun

2000V, 7.5mm spacing
http://www.mouser.com/ProductDetail/...ko6ZFjCEfPc%3d

[nramo]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

Thanks for the info budm and tvtanner. I've ordered the part, will let you know how it turns out, wish me luck .

[nramo]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

So, just installed the capacitor and had the fuse checked. The fuse was bad, so I went to radioshack and got a fuse, only problem is that the fuse didn't match up exactly. The fuse I got was a glass with low breaking capacity, the one in the circuit card is a ceramic with high breaking capacity. I tried the fuse blew instantly, so I'm hoping that replacing the fuse will solve my problem, no other noted damages. I'll post an update when I get one, let me know if you have any ideas.

[budm]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

That means there is shorted out circuit on the board some where.

[nramo]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

I was thinking that it might mean that, but hoping it was just the wrong fuse. Thanks for the help.

[johnk_13]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

Did you ever resolve this problem? I have the same issue. I was planning to replace the the cap and the fuse. Let me know when you get a chance, thanks!

[Agent24]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

Just replace them, then you could use the series lightbulb trick to see if there is any more problems, if so then the switching transistor or IC probably blew as well

[johnk_13]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

This seems like a common problem with these TV's/boards. Can you tell me the component number of the switching transitor and IC that could go bad when this issue occurs? Thanks!

[nramo]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

Johnk_13, I ended up replacing the board, I got one for a great deal. I didn't have the equipment to properly make repairs to the board. Good luck.

[johnk_13]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

I replaced the PS board and now have power. However there is still an issue and not sure if it's the PS board I installed or something else. So now my UN55D6000 TV has sound but a black screen with images that can be barely seen. Would this be a problem with the Power Supply board or the Inverter boards (left & right). From a youtube video, I unplugged the connector from the main board to the PS board and the screen was still black. I also unplugged the left inverter and still a black screen. I then reconnected the left and unplugged the right inverter and still a black screen. Do you think this is the power board/LED driver? Would you know which pins to measure the voltage of that drive the LED's and what that voltage should be? Thanks in advance.

[Agent24]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

Are the inverter boards getting any power from the supply?

Measure all voltages on the connectors to the inverters and post here what they are along with pin names. Include photos of the connectors\boards if you can.

[budm]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

It is LED backlights so it does not have Inverter for High Voltage for the CCFL.
So is John is working on the same model TV power supply board or not.
OP power supply board is BN-44-00424A.
http://assets.shopjimmy.com/media/ca...00424a-top.jpg

If is not the same model then he should start a new thread.
"I also unplugged the left inverter and still a black screen. I then reconnected the left and unplugged the right inverter and still a black screen." I like to see the pictures of these two boards and the whole back side of the TV.

[johnk_13]

Re: Samsung LED TV UN55D6000SFXZA Pwr Sup Board BN44-00424A

Thanks for the help. Yes it is the BN-44-00424A Power Supply board. Attached are four pictures.