I have had the following glitch effect a few times in the last few days on my HDR. When playing back a recording, a narrow horizontal band of pixellation appears in a line across the screen. The rest of the picture freezes and then "loops" with the last second or so of motion repeating over and over on screen. The sound continues as normal throughout. The whole effect lasts probably about 10 seconds, at the end of this, a normal picture resumes, in sync with the still continuing sound. Rewinding through the glitch and playing it again the same thing happens.

I realise this could be a burst of interference of some kind, but would have thought the sound would be affected too. The signal strength and quality show good, but obviously I have no way of knowing how they were when the recording was being made. The instances of this effect seem to be getting more often. I have no new equipment, the system connection is unchanged. I have a DECT phone, the same phone in the same location as it has been for about 2 years. I have seen the effect on recordings from ITV1HD, BBC1HD and BBC2.

I wondered if anyone else had seen anything like this? I also wondered if duff sectors on the HDD could cause an effect like this? Hopefully not! Thanks for any comments.

Think I would try a power cycle.

I'll try that as soon as the better half has finished watching something on it!

It is still a fairly infrequent effect, annoying more than anything, but I don't like that it now seems to be happening more frequently. It could be a developing problem, PSU on the way out maybe?

Doubt it - mains spike possibly? Mine started rebooting a month back, been as good as gold since ther power cycle - mains here is a bit suspect - in the middle of nowhere, overhead cables.

Well, I've now done a power cycle. I probably won't know if it's worked for a few days. Thanks for the suggestion, we'll see what happens.

If it occurs consistently in one place on the recording then I'd be looking at the following possibilities:[LIST][*]Interference[*]Bad sectors on that part of the disk[*]Other hardware issue causing the data to be corrupted (e.g. intermittent memory fault, PSU fault)[/LIST]
Given the fact that most of the data that's transmitted will relate to the picture, any issue with the data is proportionately more likely to affect the picture than the sound.

Thanks, my fear is the bad sectors. I have an outboard caddy with a 500GB disk also, and I think I'm going to start backing recordings I want to keep on the main internal disk up to that, just in case.

ITV1HD have had a multiplexer fault for months now.
The fault has symptoms similar to what you describe.
i.e. massive pixellation and frozen picture but the sound is unaffected.

Not seen this on any other channel though.

Frank

Thanks, that's interesting to know. I will look closer at recordings I know have it and confirm which channels are mostly affected. I'm pretty sure I have something from BBC2 as well as ITV1HD still on the disk with it. Perhaps the effects aren't quite the same, I'll double check.