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We have had a 4-channel Avtech 761 DVR now for a while, and it's mostly behaved OK (apart from occasionally locking out saying 'Too Many Users' when there weren't). However, recently the playback behaviour has been very odd when looking at the four cameras in the 'quad' display mode (or whatever it's called). When looking at live images, each of the positions 1 - 4 (1 = top left, 4 = bottom right) corresponds as one would expect, to the cameras connected to the Input BNC sockets. When playing back however, although on the monitor, cameras 1,2 and 4 show the recorded data for the appropriate time, camera 3 shows the LIVE data from camera 1! If I change so that I'm displaying a single channel, and select channel 3, then that (missing in quad view) channel is displayed correctly (ie data has been recorded as expected). This behaviour is experienced both by looking at the monitor output, and when using the 'Video Server' application, or the web browser version. The box has been physically disconnected & moved recently, but I'm sure that the cables are back as originally connected (and the camera inputs definitely DO go to the appropriate Input sockets. I am not aware whether there are any internal DIP switch settings or other options that might cause this behaviour, but I cannot see any software options that seem relevant. It's possible that his strange behaviour started around this time, but I can't be certain. I have called the supplier, who has no idea but suggests resetting the box to factory default, and assures me that this won't delete any video data that's on the HDD. I'm a bit unclear as to just when the video data is acually digitised - since we can (by selecting channel 3 full-screen) get the normal time-stamped data for that channel, I'm assuming that it is digital at that stage, and that somehow the system is playing back 3 channels of digitised data, and substituting the LIVE feed from one channel in a different channel's place. Very grateful for any logical explanation and suggested cures!

Hi - sounds hopeful but I've had a quick play remotely & can't seem to set it back to playback rather than give a live feed DURING playback. I can see how to use 'set' as described but not how to undo things (and yes I have only 4 channels & am using them all!) If you are able to give a slightly more detailed description of the process that would be very useful

Having just discovered the Scorpion website I see that there are some different versions of firmware for the AVTECH 761 DVR listed there- My current version is numbered 1090. The versions on the website are labelled 1.0.9.8 and 2.0.1.1 Does anyone know what the differences are over and above 1.0.9.0? When upgrading firmware via the USB memory stick, does the expanded firmware have to be the only files on the USB (FAT32-formatted) stick, or will the system pick up the correct filenames?

I think this is the 'Set' feature on the 'Video Server' app. However I don't think this is the explanation here - Channel 1 (top left) displays in the normal place during live play, but during playback I get Channel 1 (playback) top left, and Channel 1 (live) where I would expect Channel 3. I would have thought that moving the channel's location on the screen would apply both to live viewing and playback. I can see the logic in this but having searched all the options, in the OSD and the Video Server app, and checked through the user manual, I can't find any trace of this at all. I guess it's possible that it is a feature that's present in my version of the firmware, and has somehow got turned on, but not yet made it into the user interface I have. I have previously searched online for updated firmware, but without luck. Unless anyone has any further suggestions I guess I might be heading for the factory reset.

I would also be very interested to hear of any security hole with internet login. I know that the system is supplied with a default password but is it possible to subvert this? Regards