LG 60uf7650 uj T-con or Main board Problem

[fredseesred]

I have a pic problem with my 60uf7650-uj
PIc attached, would like you tell me what board to replace , T-com, Driver Board
I have disconnected ,one at a time, the Output sides on the T-Com Board and took a pic each time,
and a pic with signal and without.
Help
Fred

[Davi.p]

Re: LG 60uf7650 uj T-con or Main board Problem

Defective panel, need tape masking method, but photos are small

[Diah]

Re: LG 60uf7650 uj T-con or Main board Problem

show us please photo of the back side of all boards to see how they are connected and if there are separated T-CON or build in Panel.. either to see how many LVDS going out from MB 1 or 2

[fredseesred]

Re: LG 60uf7650 uj T-con or Main board Problem

Hi
Thanks for the Quick Reply.
Will add Bigger Pic and back Layout.
The T-con Board is separate from the Main Board.
The pic are with the output ribbon cables of the T-con board removed one at a time and pic taken and also with both output cables attached with out signal and with signal (labeled)
Thanks
Fred

[Diah]

Re: LG 60uf7650 uj T-con or Main board Problem

for me the panel are fine. the issue are with video buffer. T-CON and MB responsible on it, but because the T-CON look solo with out any heat sink i will go to replace t-con first.

[Davi.p]

Re: LG 60uf7650 uj T-con or Main board Problem

Can you make a zoomed photo of this region? possibly take the board out and then outside under the sun

Do you have a frequency meter or Oscilloscope?
It's important that you remake the photo to the no signal image but at the whole screen

[fredseesred]

Re: LG 60uf7650 uj T-con or Main board Problem

Happy Easter
Ive taken a few pic of the IC you circled and of the Screen with no signal , what I notice on the screen is that the Vertical light line junp from left to right very slowly.
Yes I have a scope , not used it for a while, but will set it up and try what you suggest Davi.p
Thanks
Fred

[Davi.p]

Re: LG 60uf7650 uj T-con or Main board Problem

scratch the test points gclk, mclk, gst and test them for the frequency, them are clock signals, test also the voltage range if possible (swing)