Samsung 59" Plasma 3D Blank Screen

[graham01]

Hi everyone, I have a Samsung PS59D550 and the screen has died, when its turns on there is a quick flicker of white on the screen and then it just goes blank, also it cannot be turned off once it is on. The buttons on the TV can be used to turn it on but then there is no response from them once on, and the red light flashes to signal it is picking up the remote signal but it doesn't have any effect never mind how long you keep the power button pressed for.. any ideas please? Would really appreciate any help!

Regards,
Graham

[tom66]

Re: Samsung 59" Plasma 3D Blank Screen

That sounds a lot like a bad Z-sustain. You'll have to open up the TV and take pictures so everyone here knows what they are dealing with.

[graham01]

Re: Samsung 59" Plasma 3D Blank Screen

Hi there, thank you for your reply but I think I just identified the problem to be a faulty tuner board (the buttons not responding gave it away) but I just tore apart my PS51C7000, put them back to back, connected the LVDS from the Tuner BD in the 51 to the 59, turned them both on and wollah! got an image on the 59

I don't really recommend this to anyone though.. it was dangerous and scary!

[tom66]

Re: Samsung 59" Plasma 3D Blank Screen

Hi there, thank you for your reply but I think I just identified the problem to be a faulty tuner board (the buttons not responding gave it away) but I just tore apart my PS51C7000, put them back to back, connected the LVDS from the Tuner BD in the 51 to the 59, turned them both on and wollah! got an image on the 59

I don't really recommend this to anyone though.. it was dangerous and scary!

Strange - the LED flashing would usually eliminate the tuner board, but maybe the LED flashing is controlled by the button board? Anyway, it looks like you have found your problem. LVDS would not always be compatible especially for 3D TV as the refresh rate is higher.

[graham01]

Re: Samsung 59" Plasma 3D Blank Screen

It is almost like the tuner board is stuck trying to turn on.. when the TV is turned on (either by the remote or tv buttons), the LED flashes but just keeps flashing until something else is pressed. The TV buttons are unresponsive, but pressing the remote buttons, although not doing anything, makes the LED flash. The only way to turn the TV off is to unplug it from the mains. Is there a way to hard reset the board? I have tried holding the exit button for 10 seconds, pressing left, then enter, which should be the correct steps to perform a hard reset although obviously I can't see the options on the screen. I am aware old models, the R8 and M8 series, if the eeprom gets corrupt it can be reset by shorting out some pins on it, but by the looks of it there is no eeprom on the newer models..

I am slightly worried as i am having trouble sourcing a new tuner board, I have found a few for sale in america, but I am assuming TV areal are a bit different to UK? Looking at the pictures, the big silver block on the areal socket is smaller than the one on mine, so is it a different adapter?

Many thanks for your help,
Regards

[tom66]

Re: Samsung 59" Plasma 3D Blank Screen

It is almost like the tuner board is stuck trying to turn on.. when the TV is turned on (either by the remote or tv buttons), the LED flashes but just keeps flashing until something else is pressed. The TV buttons are unresponsive, but pressing the remote buttons, although not doing anything, makes the LED flash. The only way to turn the TV off is to unplug it from the mains. Is there a way to hard reset the board? I have tried holding the exit button for 10 seconds, pressing left, then enter, which should be the correct steps to perform a hard reset although obviously I can't see the options on the screen. I am aware old models, the R8 and M8 series, if the eeprom gets corrupt it can be reset by shorting out some pins on it, but by the looks of it there is no eeprom on the newer models..

I am slightly worried as i am having trouble sourcing a new tuner board, I have found a few for sale in america, but I am assuming TV areal are a bit different to UK? Looking at the pictures, the big silver block on the areal socket is smaller than the one on mine, so is it a different adapter?

Many thanks for your help,
Regards

eBay is a good source for boards.

Try MUTE-MENU-POWER to get to a service menu.

[graham01]

Re: Samsung 59" Plasma 3D Blank Screen

Hi again, yes I have just tried that - no use. The board just doesn't seem to exist anywhere in the UK, it is a BN41-01605A. After a bit of revision it seems I can use an adapter to connect the american threaded coaxial to ours, but what about the software? Will it have Freeview HD??

Regards

[retiredcaps]

Re: Samsung 59" Plasma 3D Blank Screen

Hi everyone, I have a Samsung PS59D550 and the screen has died,

Not under warranty?

[graham01]

Re: Samsung 59" Plasma 3D Blank Screen

Probably not any more lol

[tom66]

Re: Samsung 59" Plasma 3D Blank Screen

Hi again, yes I have just tried that - no use. The board just doesn't seem to exist anywhere in the UK, it is a BN41-01605A. After a bit of revision it seems I can use an adapter to connect the american threaded coaxial to ours, but what about the software? Will it have Freeview HD??

Regards

Most Samsungs I have seen can be configured to have different settings like Freeview (HD) - but maybe the connector is for satellite? In which case it won't work. Also, the case of the TV may not fit.

It might be possible to repair the board.

[graham01]

Re: Samsung 59" Plasma 3D Blank Screen

Hi Tom, thanks, how do you think I can repair it?

Regards

[tom66]

Re: Samsung 59" Plasma 3D Blank Screen

Hi Tom, thanks, how do you think I can repair it?

Regards

Post a close up picture of the board; I'll highlight some places to make tests.

[graham01]

Re: Samsung 59" Plasma 3D Blank Screen



hope this is okay
regards

[tom66]

Re: Samsung 59" Plasma 3D Blank Screen

I need one looking from the top. It's difficult to locate components side-on.

[graham01]

Re: Samsung 59" Plasma 3D Blank Screen




Thanks Tom, it would be great if I could repair it

[tom66]

Re: Samsung 59" Plasma 3D Blank Screen

It would be nice to get a higher resolution (2000x1500 ), but here are some basic tests.

RED circled regulators: Check the voltage on each pin (except the middle pin) relative to the metal case of the TV. Do this while TV is trying to turn on. Record the voltages and the part number on each regulator.

Heatsinked processor: Does it get warm? (leave to warm up for 10 minutes)

Processor with metal pad: Does it get warm? (leave to warm up for 10 minutes)

If I had a higher resolution, I would be able to highlight other potential failed components, such as diodes.

[graham01]

Re: Samsung 59" Plasma 3D Blank Screen

tom, thank you very much for your help, I will do this now.. I apologize for the poor image quality, it is strange, on the image I took you can even zoom in and read the part numbers on the board.. how should I upload it?

Regards

[PCBONEZ]

Re: Samsung 59" Plasma 3D Blank Screen

The site resizes so you have to compensate by starting with a bigger pic.
Closer would be good too if you can keep it in focus.

Go Advanced [down below] then under the text box in the next screen there is an app [Manage Attachments] you can use to upload it as an attachment.
.

[graham01]

Re: Samsung 59" Plasma 3D Blank Screen

Thanks, I tried to attach but not sure if it has worked.. Anyway the voltage regulators as you have circled;

Top Left: IC707_3V3 - 17-33Z 1105AG
Left Pin: 5.34V
Right Pin: 0V

Top Right: IC203 - N055 950T45
Left Pin: 2.50V
Right Pin: 3.30V

Bottom: IC708_1V6 - 17-18Z 1022BG
Left Pin: 3.30V
Right Pin: 0V

Both processors are luke warm after 5 minutes.

My eyes may have deceived me when taking the model numbers..

Regards

[graham01]

Re: Samsung 59" Plasma 3D Blank Screen

the upload failed twice, I think maybe because its 3.6MB.. You can find the image below;

http://postimage.org/image/odnwgcpb5/

Regards