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Promethean Direct Support Thread, USB connection dropping out in Direct Support; Hi I have 2 activboard 378 installed last summer that both drop their USB connections on a daily basis, sometimes ...
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    USB connection dropping out

    Hi

    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 ActivDriver
    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!

    thanks

    Kim

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    GeekyPete's Avatar
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    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?

  3. Thanks to GeekyPete from:

    tinca492 (4th February 2014)

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    Hi Pete

    Thanks for your reply, your thoughts echo mine really, I am really fishing to see if this is a problem that others suffer, or whether it is just me.

    The installation company I use normally do an excellent job, but I think I am going to have to get the board off of the wall and see how long the cable run really is and also check its routing

    Unfortunately dont have a spare laptop but will move the PC closer and try a shorter cable.

    I'll post back with outcome

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    Did you manage to resolve this problem?

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    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.

    Kim

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