Hi,
This is a hazardous problem, sometime the recording to usb hd works for the channel arte hd (switzerland naxoo).
Playing a previous recorded progam produce a black video ant then tv screen stay black!
Timeshift doesn't work except with the channel mentionned.

Is there a way to record with 55PFL5507K/12 ?
I tried with 2 differents hsb hd. same problem.

Regards