Try another drive that does not sleep. After that, call Samsung and see if they have a fix.
Our Samsung KS7000 is struggling to record when the tv is switched off. We set it to record a programme later in the day whilst we are at work yet it fails to record. It does it if it's only half hour or so after the tv has been turned off but any later it fails every time. At first we thought it would be the HDD going to sleep after a time so we switched to a USB flash drive however we still have the same problem. Any ideas?
Thanks!

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