UN55KU6500FXZA White screen

[zukdj]

TV was fine last night, woke up this morning and turned it on and got this. Someone told me it needs a TCON board however it looks to me like it doesn't have a TCON board, ribbons go right to mainboard, thoughts?

[zukdj]

Re: UN55KU6500FXZA White screen

Is the TCON built into the mainboard?

[Diah]

Re: UN55KU6500FXZA White screen

can you show us the whole boards at the back side of the tv.. to be sure there are no t-con.

[zukdj]

Re: UN55KU6500FXZA White screen

Here it is

[Diah]

Re: UN55KU6500FXZA White screen

put LVDS back be sure of them not damage.. then try hard rest from service menu... not from normal installation menu

[zukdj]

Re: UN55KU6500FXZA White screen

Not sure how to do a hard reset from service menu? LVDS Low Voltage ? ?

[Diah]

Re: UN55KU6500FXZA White screen

Not sure how to do a hard reset from service menu? LVDS Low Voltage ? ?

NO,
did you inter service menu ??? upload photo please

[sigmeyer]

Re: UN55KU6500FXZA White screen

I had the same problem on one of the TV's i fixed .. IT was the Gamma controller chip , TCON is probably soldered directly on TV , or maybe its part of the main board, not sure.. I would check for VGH test points, there should be descending/rising voltage in order of pins depending from which way you test...Also 1 thing that you can try is ,when the tv is turned on , go with the back of your hand over the mainboard( NOT PSU ) and check to see if anything is burning hot. if not, i would dissasemble the TV completely to get to the driver board and see if there is anything wrong there

[zukdj]

Re: UN55KU6500FXZA White screen

I haven't done anything yet, I am still a newbie at this stuff so please cut me some slack if I don't understand.

[zukdj]

Re: UN55KU6500FXZA White screen

There was an update available, completed a hard reset per instructions online for this particular TV. Completed update as well. There is only 2 boards in this TV, mainboard and power supply so I can only assume main is bad. I'm just doing process of elimination, all the LED's are lit up, it powers on and off like it should, main/tcon combo sounds like the only realistic path to take.

[Davi.p]

Re: UN55KU6500FXZA White screen

This is the new age Samsung s*itty mainboards with tcon integrated, it is probably broken the chip that stores the gamma values, since a reprogramming of this is almost unpossible due to lack of skill and datasheet, so the only way is to.change mainboard. bye.