K, so I LOVE both the TV and remote but they're not getting on with each other.
When I add the TV to the Harmony, it thinks I have only one HDM input.
Any help on adding the other two (and fixing the other incorrect inputs) much appreciated.
Try to register it as a 42LG5000 in the Harmony software which is basically the same model.
It could be that the Logitech DB for this model is more complete than the 5010
I spoke with Logitech support and they have built me a custom solution.
Works but uses the fact that RGB input has a dedicated button then sends a right arrow a couple of times to select HDMI inputs.
Is reliable but a bit slow.
If I can add a new TV without putting the existing solution at risk, I'll give the 5000 a try.
That happens a lot with logitech remotes, input problems.
You can try to customize the RGB input using this method
In the Harmony software go to Devices> TV> Settings> Adjust Inputs> Method 2 and allocate the appropriate commands from the dropdown list to your required Inputs, in this case only for RGB.
Otherwise you can ask Logitech if they can lookup the discrete code for the IR signal that RGB is using (maybe from the LG5000/5010)
but they're not getting on with each other. 
