I just changed my 50PFL7956H/12 by a new 55PFL7007H/12. On this, I connected a DVDR HDD and a Iomega Multimedia Hard Disc via HDMI cable. On my 21:9, worked perfectly my Iomega HDD but on my new set, I tried to look at a movie on my HDD, I get perfect image but no sound whatever the movie I am looking at.

I tried on the different HDMi connections , I tried to change the HDMi cable but without succes

Last software QF1E- has been installed

thanks for your help