QMEDIA LCD TV suddenly no sound with laptop, DVD player etc.

Hello,

Our QMEDIA LCD TV (QL32A5-FHD) was working fine until yesterday when we switched it on and there was no sound.

We only use it with the computer laptop, the DVD player (scart) and media hard-disk (HDMI cable). We dont have a connection to a TV network.

Please note that the problem arises with the laptop and all the other peripheries, so we are sure that the prob is with the TV not the laptop or other peripherary.

We have gone through the manual, and there are no solutions. We have gone through the entire remote control too. For ex, the TV is definitely not on mute, the volume is set on a high setting. We are certain there were no physical mishaps

Has anybody had any similiar issues that might help me figure out the problem ? Many thanks in advance :-)

Best regards