Screen has a weird mesh pattern appearing on it

napper_tapper · April 11

Hi all,

Using a TCL 55". I got into the service menu by highlighting the contrast option and entering 9735 on the remote and it gives this information (don't know if it helps at all):

SW NO: V8-R851T02-LF1V363.015392

Project Name: 55P715K

Panel Name: UD_ST5461D12_4_TCONLESS

SIACP Version: 10.1

C4p Version: Null

It's got an issue where almost the whole screen has a mesh pattern over it, it's really hard to make it out but it's like a grid pattern with X's inside the grid. I've tried googling this and can't find anything and it's really difficult to take a picture of it because the mesh is so small. I have a set of calibrated Mitutoyo vernier callipers and they appear to be maybe 0.5mm wide.

The mesh/ grid covers almost the entire screen except around the perimeter, there's an approx. 5.0mm gap between the borders of the mesh and the borders of the screen. The image in the clear border area is perfectly normal in terms of appearance.

Anyone have a clue what has happened and if it can be fixed or whether the TV is now broken?

Troubleshooting already done:

Factory reset from normal menu = didn't fix,

Factory reset from service menu = didn't fix,

Tried cleaning and re-installing GPU drivers = didn't fix,

Tried brand new 8K HDMI cable (instead of DP) = didn't fix,

Tried brank new DP cable = didn't fix,

Tried a different GPU = didn't fix,

Tried a different HDMI input = didn't fix,

Tried a different PC into all three HDMI inputs = didn't fix.

GuiltySpark_ · April 11

35 minutes ago, napper_tapper said:

Factory reset from normal menu = didn't fix,

Factory reset from service menu = didn't fix,

Tried cleaning and re-installing GPU drivers = didn't fix,

Tried brand new 8K HDMI cable (instead of DP) = didn't fix,

Tried brank new DP cable = didn't fix,

Tried a different GPU = didn't fix,

Tried a different HDMI input = didn't fix,

Tried a different PC into all three HDMI inputs = didn't fix.

RMA/Return/TCL service, it sounds like.

napper_tapper · April 11

59 minutes ago, GuiltySpark_ said:

RMA/Return/TCL service, it sounds like.

Unfortunately the thing is just over three years old and TCL only give a 24 month warranty, so RMA not available. I'll reach out to TCL technical support and see if they have a local technician who could check it out.