Samsung LE32d400 double image

[branislav18]

Samsung LE32d400E1W has gost image.
Seems like the red colour is offset by 1mm down.
4cm on the bottom of the screen is working fine.

[tom66]

Re: Samsung LE32d400 double image

Most likely cause is a bad panel, D-series Samsung TVs are terrible for panel failures.

[bammbammfran]

Re: Samsung LE32d400 double image

It sounds like a t-con board issue.
would need a picture of the inside of the unit from the backside showing the boards and the lcd panel model number

[branislav18]

Re: Samsung LE32d400 double image

Tcon board is mounted on the panel and it's flat cable is not detachable.
I am new on this forum, did not figured out yet how to upload pictures.

[bammbammfran]

Re: Samsung LE32d400 double image

For pictures: when typing a reply, click on (Go advanced)
on the top row to the right of the smiley face is a paperclip
Click that then choose browse which will access you computer files to locate the picture, then once you choose the picture, click upload

[branislav18]

Re: Samsung LE32d400 double image

Here are the pictures
Tcon is mounted directly to the bottom of the panel, flat cable that comes from mainboard is detachable, the second one from Tcon to panel is glued.

[bammbammfran]

Re: Samsung LE32d400 double image

That cable is more than likely removable, but That probably is not a factor unless you are losing some power that feeds the screens pixels ??

Since the board is on the bottom (which is good for heat but bad for spills and condensation) and since the bottom works, then it is probably the panel.
It looks like not enough power is making it to the upper sections.

If you feel ambitious , you could remove the front frame, then remove the metal frame around the lcd, then look for the plastic tabs that are on the bottom edge and probably on the right and left side (There probably is one right where the picture changes from good to bad).
Then, once you find those, with rubber gloves, try applying a touch of pressure to the ribbons and where they meet the glass. (basically targeting the end ones on the bottom and the side ones (If any) near where the problems change) this may give you an answer

also , once the trim is off, you'll get a better look at that ribbon mount. and for hahas, you can clean the contacts if you see a way to disconnect it.

[branislav18]

Re: Samsung LE32d400 double image

Thank you for your reply. I already tried to disassembly panel but there is only one ribbon glued to the panel glass directly from Tcon. When I apply little pressure to it there is no change on the screen.

[bammbammfran]

Re: Samsung LE32d400 double image

I have never seen a screen with ONE ribbon connecting the screens board to the screens glass.
Maybe you are not understanding what ribbons I meant ? I do not mean that white flat ribbon. the ones I am talking about are usually more of an orange

this video of a 24" screen would give you a better idea
http://youtu.be/vI1tuQ_3FG0

[tom66]

Re: Samsung LE32d400 double image

A lot of modern LCD panels only have one ribbon for the panel, I have seen them popping up recently.

[bammbammfran]

Re: Samsung LE32d400 double image

I have seen small laptop screens with only 2 tab bonds
but never anything large
I would like to see a picture of one of those animals

[tom66]

Re: Samsung LE32d400 double image

Well, you have one here - only one driver bond.
The driver IC has all 4095 outputs on it.
Wonder how well the heat is dissipated in that? Could be half the reason these new panels die so quickly.

[selldoor]

Re: Samsung LE32d400 double image

Have you tried a factory reset?

[bammbammfran]

Re: Samsung LE32d400 double image

It is no wonder they fail !!
too much expansion and contraction on something this size and or too narrow of contacts
SO on this panel, the power connections feeding the upper parts of the screen have probably let loose , probably at the outer sides of the bond.
I wonder what they used on the CURVED new ones !!!

[selldoor]

Re: Samsung LE32d400 double image

here is an excerpt from the handbook - maybe worth a try or perhaps try another aerial or is it on all inputs

English DigitalNoiseFilter(Off/Low/Medium/High/Auto/AutoVisualisation): If the broadcast signal received by your TV is weak, you can activate the DigitalNoiseFilter feature to reduce any static and ghosting that may appear on the screen. N When the signal is weak, try other options until the best picture is displayed.

[branislav18]

Re: Samsung LE32d400 double image

Yes there is only one brown ribbon with some little black element stuck in the middle of that ribbon as a part of it and it is hot. I have disassembled tv earlier it is not that ribbon from the picture. I will add picture of it later today.
I have tried to factory reset even in service mode tried to change model - no result.
Picture is bad in all modes (inputs)

[branislav18]

Re: Samsung LE32d400 double image

Here are the pictures of t-con and that braon one flat cable

[budm]

Re: Samsung LE32d400 double image

That IC on the flexible PCB is the TFT driver IC, it does run hot.

[bammbammfran]

Re: Samsung LE32d400 double image

that's a joke of a design !!!

As I mentioned: If it doesn't have any side ribbons on the glass panel , then the contacts on one end or the other would feed power to the top side pixels, and that is probably where your issues are

[tom66]

Re: Samsung LE32d400 double image

This is the new design, the gate driver is embedded in the panel (known as "Gate in Panel" design.) Inherently, that SHOULD be more reliable... no tab bond to fail and the gate drivers usually don't run that hot. It seems the failure is actually in the drive signals from that top tab not reaching the panel.