For reference, this is the back of your receiver:
Apparently this is how I connected the devices, I was mistaken above.
Cable box HDMI ARC >> Reciever HDMI 3
Reciever HDMI ARC >> TV HDMI ARC.
So the connections are not the problem..
Now my mom says each time she uses ths system, the reciever cuts out after a bit. I did buy it second hand but I wasn't aware of any problems with it. Maybe there's something fixable before I blame it on the seller...
When switching through music modes, like "2ch stereo" on the reciever, there's an audible click from the reciever. Then when switching back from this mode, another click. Only some make this click. Maybe it has something to do with it?
Would adding an optical cable solve this plonter?
I'm kind of lost here.
EDIT : The reciever now acts funny with the cable box too. It says it gets no signal from HDMI 2, while the cable box is connected to HDMI 3. It seems it only randomly works. When it doesn't, it gives no signal to the TV, and the reciever says "decoder off".
I did try to plug the cable box to HDMI 2, doesn't help. Still no signal.
Now I connected a laptop to the reciever instead of the cable box, and it sent picture and sound to the TV and the reciever said PCM.
When returning to the cable box, the TV 'dies' - TV screen is on, the cable box is on, but there's no signal on the TV. Receiver says 'decoder off'.
Maybe the cable box is faulty? Even though it's brand new. I can always contact the company. But if it seems like a reciever problem, I still want to troubleshoot it.