HTS7140/12 Goes Silent

I have been using my HTS7140/12 without any issues...until yesterday.

I have a Panasonic TX-P42ST30E which is a NeoPlasma panel with 4 HDMI inputs out of which the second one is the HDMI - ARC one -and that's the port I connected the soundar to my panel.

Since yesterday, while I'm watching TV via the digital satellite (HDMI 1), out of the blue, HTS7140/12 goes all silent. It either mutes itself or allows the TV's own speakers to take over.

I turn soundbar on and off, mess with Audio Mapping options to bring it back of which none is conclusive. You just try until it works out.

I have the latest firmware (v56) for my soundbar and I'm wondering what could be the problem.

Thanks in advance.

Same issue here , happened a couple of times .
HTS7140/12 connected to 47PFL7606 / HDMI Arc
I had to go back into the TV Audio menu and reset the audio mapping.
HTS isn't on v56 but on v53
TV is on v89 [ refuse to move from this given the negative feedback in TV forum about TV upgrades ... ]

Make sure you have latest fw installed