phily

Thanks all. I think I'd covered all the bases but always good to have a fresh pair of eyes so to speak. I bit the bullet and ripped the board off he wall, dragging it to another classroom. Same issue in there. Looks like the board itself. Luckily it's in warranty by, wait for it, 2 days! Thanks for your ideas.

Thanks so far... I have re-calibrated the board. Tried a new pen. re-installed the latest driver and changed the connection cables. Problem remains. I read that the issue could be to do with EMF interference. Sounds a bit of a reach but I've re-routed cable nonetheless. The board is connected to a new (2 weeks old) desktop. The problem was there on the old computer too. Connection is via com port.

No, the board has been there for 3 years with no issues.

I have a Promethean Activboard which appears to calibrate ok but when in use, the calibration is out. The issue gets worse the lower down the board you draw. e.g Have squared background on screen, draw with pen around one square on the top line, calibration out by half a square. Draw round a square on the bottom line, calibration out by 3 squares. Any help welcomed.

Power save mode is not an issue. The port goes down and stays down. I plugged in a USB optical mouse into the 2 ports that didn't work for sound and it wouldn't power up. As soon as the speakers ae plugged into another USB port, the computer detects them and starts to work. But I'm going to run out of working ports! I've had issues before where firewire has 'burnt out' following prolonged use, I wonder if there could be a similar issue but I suspect not.

Sorry if this has been covered before, but I can't find an entry... New smartboard and speakers fitted. Connection from spreakers direct to USB port. Plays sound perfectly well for a couple of hours then nothing. The USB port on the computer dies. The installer will, of course, replace if faulty but says he hasn't had the issue before. Any ideas?