I have 2 activboard 378 installed last summer that both drop their USB connections on a daily basis, sometimes several times in a day, leading to no sound and no pen input.Same model boards were installed around the school several years ago that are working faultlessly.
Flame turns red.
Have already tried
Updating all Drivers on PC
Updating Board firmware 8.10 build 7
Changing USB Cable
Changing USB Port
Checking all powersaving/sleep options
Same model of PC with same image in use in several classrooms without issue
Have to unplug/replug usb cable to reconnect to the board, however this sometimes takes half a dozen times before it works
Using a 5m high quality usb cable causes sound to distort horribly
Only difference to other classrooms is that the PC is around 2m from the whiteboard rather than being right next to it.
My next option is to remove the board from the wall and replace usb cable from board connector to faceplate.
any ideas greatfully received as my head is starting to hurt!
Sounds like signal loss, particularly with the loss of sound quality. You should really limit USB to 5m to be on the safe side. This will be to the device so you have to add any length from the faceplate, in the trunking to the device. Could also be cross-over interferance. Does the cable run close to any speaker, Phone, flourecent light, School bell etc?
What happens if you plug a laptop in to the device with a nice short USB cable?
Finally got a chance to take board down, the helpful supplier's apprentice had thoughtfully wrapped about 5 m of usb cable in a loop together with power cables and tiewrapped them all together!! Have rerouted a fresh 2m cable and all is well at the moment.