Thanks Grahamh but i’m not sure to understand the value added of this. I wouldn’t break the good one wich is in the main lounge… 
The ‘bad’ one was working well in kodi 19.1 with this cable and TV (untill i try to plug a HDMI to VGA with PC monitor. Now i put back the right cable and TV…).
After that the ‘bad’ one was blocked to low resolution.
Now the resolution is great with your good advice and JohanBakker one. But the 3D Blueray isn’t working. For information, few days ago, the “good” one update to 19.3 Kodi version (19.1 before) and the Blueray 3D had the same issues (not switching TV in 3D, written “Mode 3D stereo-monospcopic 2D”)… I try some random manipulation (x*y resolution in 2D, 3d, …) and it come to work. I don’t really know how.
Note the “bad” one is also now in kodi 19.3.
I try to backup the good to the bad without sucess.
I have read some post :
Playing 3D Blu-ray in 2D - Help and Support - OSMC Forums
That is was a bug to read 3D blueray. But it is working on the good one (1920*1080p 2D 59.94 hz).
Sorry for this long post.
Do you think the log of the good one with Cable and TV of the bad one still help ?
Otherwise what could i do ?
Thanks