Samsung UE55F9000ST

[StephenU]

Looking to repair a current Samsung Smart 4K 3D HDTV I currently purchased, Sorry i dont have any history, thought I would take the gamble. Anyway couple of questions first.


Make : Samsung
Model number is : UE55F9000ST


Does anyone have this or any experience with the type of tv that requires a One Connect box, if so, if the One connect isnt connected to the TV does anything appear on the screen at all?

At the moment all I get is a white/blueish screen the little white light (ON indicator) at the front is on and the standby button changes from red to blue or green (will need to double check again)
So seems the TV is powering up in some way, I just don't know if it should boot up with the Samsung Logo on screen or a splash screen of some sort, don't want to fork out £300 on the One Connect unless I know the TV is doing what it should be doing.


Thanks in advance


Stephen

[StephenU]

Re: Samsung UE55F9000ST

Here is a pic with the TV powered up no One Connect.

Got tv opened and found a blown fuse (F1) on the what I think is the TCon and replaced but no difference.

Any pointers would be much appreciated on this one as always guys.


Stephen

[StephenU]

Re: Samsung UE55F9000ST

Pic of F1 which is a 125v / 7A

I replaced with a 125V / 3A

[Moreno83]

Re: Samsung UE55F9000ST

This looks like a T-con problem , it can cause a white screen.

Can you provide pictures from the boards?

[dick_barton]

Re: Samsung UE55F9000ST

If it's a 7Amp fuse being replaced with a 3Amp fuse I'm surprised it hasn't blown open circuit.

[StephenU]

Re: Samsung UE55F9000ST

This looks like a T-con problem , it can cause a white screen.

Can you provide pictures from the boards?

Sure i will get it back open tonight and give it the all over, and get some decent pics posted.

If it's a 7Amp fuse being replaced with a 3Amp fuse I'm surprised it hasn't blown open circuit.

only thing i had in the spares tray i'm affraid, will check it again tonight once opened see how it is.


Thanks for the input guys.

Stephen

[mmartell]

Re: Samsung UE55F9000ST

Something happened to pop the fuse in the first place so go over the tcon thoroughly.

[StephenU]

Re: Samsung UE55F9000ST

Something happened to pop the fuse in the first place so go over the tcon thoroughly.

Thanks mmartell, I will do.

[StephenU]

Re: Samsung UE55F9000ST

T-Con board PN's are -

VD_5565EU22BC6LV0.1
LJ94-29145F

[flocko]

Re: Samsung UE55F9000ST

good luck finding one of them?

[StephenU]

Re: Samsung UE55F9000ST

good luck finding one of them?

Thanks flocko.!

[budm]

Re: Samsung UE55F9000ST

I can be bad panel (shorted TFT driver ICs) that caused the fuse to blow and it may take out your new T-CON too, you should try having one cable between the T-CON and the LCD panel connected one at a time to see what you get.

[StephenU]

Re: Samsung UE55F9000ST

I can be bad panel (shorted TFT driver ICs) that caused the fuse to blow and it may take out your new T-CON too, you should try having one cable between the T-CON and the LCD panel connected one at a time to see what you get.

Have the tv stripped down at the minute, fuse had blown again. Will try your method budm and let you know. I did try unplugging the right hand side panel cable , no difference and also done vice versa with left, same outcome. ( from the bn94-06576a board that sits above tcon.) cables in pic attached. Also a tcon going by the part number.

Thanks

Stephen

[StephenU]

Re: Samsung UE55F9000ST

Removed all 4 ribbons and replaced one at a time, same white screen, also removed all and tried with same outcome again. Any other suggestions would be appreciated.

Thanks

Stephen

[Diah]

Re: Samsung UE55F9000ST

SAM 4K panel had on both side left and right side ribbon taps easily moved round to get damage, you need to remove the LCD bezel to check them.

[StephenU]

Re: Samsung UE55F9000ST

SAM 4K panel had on both side left and right side ribbon taps easily moved round to get damage, you need to remove the LCD bezel to check them.

Didn't notice any damage to ribbons around the inner bezel, I am going to replace the blown fuse again, now have 5A ones then disconnect everything connected too the tcon board, i will replace one thing at a time and check fuse after plugging a ribbon/connector etc in,(powering down and back on after each instance) this should surely narrow it down to which board the fault lyes?

TIA