Pioneer DVR550HXS: 'Channel not in service' problem

[yurkyurk]

My Pioneer DVR550HXS generally works fine. However, sometimes it will display the message "This channel is not in service", regardless of which digital channel is selected.

If I turn the DVR off and then on, it works fine.

My digital TV has perfect reception, and the DVR itself shows a signal strength of over 93%.

Any ideas?

[wabjxo]

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