WD Media Player gen2 not working on LG 2gen 4k

I have the WD Media Player Gen2.

In my old Full HD Samsung TV, it was working perfect.

In my new LG 55uf8507 Smart TV, it is not working at all!

Can somebody help me?

Welcome to the Community.

What have you tried so far? Changing the HDMI cable? Changing the signal type from NTSC to PAL? Confirming if your TV uses a specific configuration for older devices?

NTSC / PAL doesen’t effect HDMI

but, yeah … trying a different HDMI cable or input would be the 1st thing to try