Samsung UN55D6050 Audio but Black Screen

[hooger]

Hello,

I was given a non-working Samsung UN55D6050TFXZC that I am interested in repairing.

The TV turns on, and there is sound. However the screen is black, and as far as I can tell the backlight is on. I've tried pressing the menu button to see if it was just an input problem, but the menu does not show up either.

I read the "Basic_LCD_TV_trouble_shooting_guide_by_Bud_Martin.pdf" from this website, and from that I believe it is either the main logic board or the T-CON board.

I looked up replacements, and they seem to be out of stock or highly priced. So before I purchased any replacements I wanted the best guess of which I should replace.

I've looked over the boards for any blown fuses or busted capacitors, but everything looked fine to me. I can post pictures later tonight once I get home from work.

[tom66]

Re: Samsung UN55D6050 Audio but Black Screen

Do you have a digital multimeter available? Any other equipment, like an oscilloscope, might also be worth mentioning.

[hooger]

Re: Samsung UN55D6050 Audio but Black Screen

I have a multimeter, no oscilloscope, other then a soldering iron I can't think of any other equipment.

[tom66]

Re: Samsung UN55D6050 Audio but Black Screen

Do you have a camera to take photos of the boards in the set?

[hooger]

Re: Samsung UN55D6050 Audio but Black Screen

I have just arrived home, and I will upload the pictures now.

Also I talked to the guy I got the TV from, and he said he had this TV repaired for the same issue back when it was under warranty.

The work order for it says:

"Screen would go black, sound ok, then screen will come back intermittently"

It then says the part that was replaced was a BN44-00424A SMPS, is it safe to assume that since it's an identical problem I should be able to buy the same board and swap it out?

[tibimakai]

Re: Samsung UN55D6050 Audio but Black Screen

Every time I hear about D series, I'm thinking about bad panel.
I wouldn't spend a dollar on it yet.
I would make sure, that all the voltages are there first and everything works as it should.

[Chaman]

Re: Samsung UN55D6050 Audio but Black Screen

Hi

Do you still have this TV with you, I was working on a wall lit TV and it would be helpful if you can spare it. let me know your thoughts here is my email venkir@hotmail.com

Thanks
Chaman.

I have just arrived home, and I will upload the pictures now.

Also I talked to the guy I got the TV from, and he said he had this TV repaired for the same issue back when it was under warranty.

The work order for it says:

"Screen would go black, sound ok, then screen will come back intermittently"

It then says the part that was replaced was a BN44-00424A SMPS, is it safe to assume that since it's an identical problem I should be able to buy the same board and swap it out?