gray pixels on my 2 yr old LG 4k tv
Could you help me determine the cause of this?
TV LG 65La9700 with 65LA9700-UA.AUSZSVX 4k upgrade kit.
this problem showed up little over a year after the upgrade.
it is not consistent in all video modes, and a power cycle will reset issue, but it returns over a period of time, and depending on the input source, may or may not come back, see below..
the gray box typically shows up 3-5 min after the tv signal is turned on. however on HDMI 1 it is very random it may show up, may not.
-HDMI 1 everything works rarely any gray out pixel block with 1080p/4k video signal
-HDMI 2 gray pixels with 1080p video signal no 4k available on this input
-HDMI 3 gray pixels with 1080p video signal no 4k available on this input
-internal streeming apps with no Hdmi input.. gray box, randomly but takes much longer to show up.
HDMI 1 UHD input source is ok not gray box.
I tried all HDMI 1080p signals with 2 different cables and the result was the same.
IT sounds like the Mainboard being it carries with inputs and the onboard apps such as (Netflix HD/UHD and Amazon Prime Video in HD or UHD) or could it be the T-con board? or LED boards?
Is this it?