Hi Yaesu and welcome to the forum 
As gomezz has said turn up the volume on the HDR to max volume – use the HDR remote and press the PVR button on the HDR remote then turn up the volume – from then on use the TV button on the HDR remote then volume to control sound level.
You are probably not aware that using all capitals in an online forum is considered as ‘shouting’ and also makes it more difficult to read so please bear this in mind for future posts.