Our Freeview unit in playback will often produce a very pixelated picture then the sound and picture go out of sync. My fix at present is to stop the replay then start it again. The sound and picture will be in sync again but this can happen several times in the course of an hour or two viewing.

It concerns me that it might be the HDD or the unit dying. Does anyone have any advice on the matter?

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It may not be a problem at all but just glitches in the recorded file. It's unlikely to be the HDD or Unit dying. My HTPC does this occasionally too when streaming some files via my Network. I just have to stop and restart the Video to get back in sync. No apparent reason for it I can find. Seems to do it mostly using Windows TV and Film for playback. Doesn't usually happen with VLC Player.

Our Dish TV T1020 is connected via an aerial not our computer network. The pixilation of the picture must surely indicate some form of electronic fault/failure or interference? As it only occurs during playback (and it's not the entire picture, only part of it; also it's not on every recording and it seems to occur shortly after fast forwarding through ads) I am inclined to think it must be either the HDD or board. Clearly there has to be some reason for it.

Not necessarily. The point I was making is that if there are glitches in the recorded file it can produce the problem you are experiencing during playback. The problem may be caused by a poor antenna system (or interference) causing the glitches while recording. IMO it's unlikely to be a fault with the box electronics but a problem during recording causing slight corruptions in the file. The file corruptions are significant enough to cause pixellation and loss of sync during playback but not bad enough to prevent playback.

I take your point and will continue to monitor proceedings. Thanks.

Try monitoring your signal strength and quality over short periods to see if there are any dropouts. If there are it would indicate antenna/cable problems or perhaps even interference. If the signal is constant and stable then it may be a problem with the box but would be hard to trace.

Is there something on the menu which allows me to check the signal strength?

It's usually found in the manual tuning section. That's where it is on my Sony TV and Panasonic Recorder.

Roger Johnston said:

Is there something on the menu which allows me to check the signal strength?

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