Panasonic TX-L42B6B issue with image

[danjcarr1]

Hi all I have just picked up a 42 inch Panasonic LED Tv that has a fault with the image.

When turned on the tv is fine and displays normal.

After roughly 10 minutes the image gets a green tinge to it.

Could this be a bad t-con board?

Any input would be appreciated.

Thanks

Dan

[danjcarr1]

Re: Panasonic TX-L42B6B issue with image

[danjcarr1]

Re: Panasonic TX-L42B6B issue with image


image ru

[danjcarr1]

Re: Panasonic TX-L42B6B issue with image


image post

[Shinju]

Re: Panasonic TX-L42B6B issue with image

Looks like a Gamma failure to me! Pop the back off and snap a photo of the t-con board.

[tom66]

Re: Panasonic TX-L42B6B issue with image

More likely it's a loose LVDS cable or bad main A/V.
Too new for common gamma chip fault (AS15 etc)

[danjcarr1]

Re: Panasonic TX-L42B6B issue with image


upload an image

[danjcarr1]

Re: Panasonic TX-L42B6B issue with image

I'm leaning towards a bad main board as it comes on fine and then after a few minutes the fault appears

[tom66]

Re: Panasonic TX-L42B6B issue with image

Fiddle with the LVDS cable (between main board and T-con board) and note if the effect comes and goes.

[Shinju]

Re: Panasonic TX-L42B6B issue with image

Or, when the panel is cold, with the back off heat up the MB or LVDS cable with a hairdryer and once its warm turn it on and see if that failure happens right away.

[danjcarr1]

Re: Panasonic TX-L42B6B issue with image

I have had the back of the TV and can confirm that pressing on the LVDS cable towards the T-con board connector causes the fault to appear/disappear so it looks to be a bad connection on the LVDS cable.

Thanks so much for the help Tom and Shinju