I have had the same PVR setup for countless months and it has worked happily so I have not needed to tinker with anything. The setup is a Sky box receiving Sky Broadcast subscription (i.e. free to air), this is fed into a PVR150 (analogue via S-Video) and a HVR3000 fed from a splitter between the dish and Sky STB getting DVB-S Freeview. This box may be slightly underpowered (Win7) but has operated well for as long as Win7 has been around (including pre-releases).

That was until a couple of weeks ago when I started getting delays/pixelation in the digital picture. This started with just recorded TV but more recently with recorded and live TV (not channel specific). I have attempted to troubleshoot as follows:
1) Checked reception in the Sky STB - signal about 60%, quality about the same - this is fairly standard and we have had no issues with the reception through the Sky STB (if quality gets to 0% we have problems).
2) Reinstall - As it happened I was going to do this anyway, so now i have a fresh (a little higer spec'd) system with only Win7 and current drivers installed - same problem.
3) Playback on a second machine - I have another more powerful PC and this plays back the recorded TV with the studders - therefore most likely during the recording phase rather than playback.
4) Tested WinTV 7 - same issues.
5) Connected HVR3000 directly to LNB - no change

Any other suggestion that I could use to determine in the HVR is on deaths door? Do these cards die this way or should I be looking for other solutions?

Thanks for any help.

GF