SAMSUNG UN46D6420UFXZA bad t-con

[elbabu]

Re: SAMSUNG UN46D6420UFXZA bad t-con

Can't you show all the screen??

No, I can see only less than half picture, but that check has been done with one of two tcon ribbon cable unplugged. If I put both the tcon ribbon cable the tv doesen't light on. The photo uploaded has been taken with the right tcon ribbon cable unplugged.

[budwich]

Re: SAMSUNG UN46D6420UFXZA bad t-con

its has good probability that someone washed the screen and let liquid get down into the front panel. Check the edge boards on the bottom of the panel for water marks / contamination.

[ALPUG60]

Re: SAMSUNG UN46D6420UFXZA bad t-con

Hi all.....I know this is old thread, but I have replaced T-Con board, and disconnected one ribbon to panel, and get one half picture. From what I read its a bad panel. Does panel mean the circuit board that the ribbon from T-Con board attaches? I guess that board attaches to panel by lamination? So the entire panel has to be replaced. Is there anything else I can do before giving up on set? Thanks AL

[budm]

Re: SAMSUNG UN46D6420UFXZA bad t-con

"Does panel mean the circuit board that the ribbon from T-Con board attaches?" Yes, there should be some SMD caps on that long board that you can test for short or has leakage resistance, so use your Ohm meter and test the resistance of the caps.

[ALPUG60]

Re: SAMSUNG UN46D6420UFXZA bad t-con

Thanks for reply.....The problem is the board can not be removed, the ribbons (3) seem to be laminated on. But can I assume the caps (micro small) are labeled 'C' on circuit board? Thanks AL

[budm]

Re: SAMSUNG UN46D6420UFXZA bad t-con

You do not have to remove the board, you have to remove the frame of the LCD panel assembly to get to the board so you can test the caps.
C = capacitor.

[ALPUG60]

Re: SAMSUNG UN46D6420UFXZA bad t-con

I checked all the caps with meter, and I am getting cap action ...none shorted. Is there a voltage check I can do on caps? Would that pin point problem? Thanks AL

[ALPUG60]

Re: SAMSUNG UN46D6420UFXZA bad t-con

I should mention... with both ribbons connected there is a horizontal line about 2 inches wide across bottom of screen. I could barely see menu when pressed, but it is there very blurry. If this makes difference? AL

[budm]

Re: SAMSUNG UN46D6420UFXZA bad t-con

Can we see the screen shot of what you are seeing on the screen?
Is/are the long board at the bottom edge of the LCD panel or on the top edge of the LCD panel?

[ALPUG60]

Re: SAMSUNG UN46D6420UFXZA bad t-con

The long boards are on bottom of set...I will send pic

[ALPUG60]

Re: SAMSUNG UN46D6420UFXZA bad t-con

I guess its a bad panel...and time to e-bay boards. AL

[Oldcarguy]

Re: SAMSUNG UN46D6420UFXZA bad t-con

Hi I have a similar problem with a un65h6203b it has a white spot 3-4in wide top to bottom. Does that mean the screen is bad? The ribbon that feeds that area of the screen is very hot.

[Oldcarguy]

Re: SAMSUNG UN46D6420UFXZA bad t-con

More pictures

[Davi.p]

Re: SAMSUNG UN46D6420UFXZA bad t-con

Not good to show only part of the screen, neither a wizard can judge..