Hi all,
I've got some strange problems with my Melzi board. I've tried several USB cables but I only got a connection with a 20 cm cable.
I can connect to the printer and everything works as supposed to. The strange part is that as soon the shield/cover of the USB cable touches the computer my touch pad starts behaving erratically...
Of course this only applies when the 19v brick is connected - it doesn't matter if the board is powered by the computer or the 19v, in both cases there are problems.
Is there a short somewhere? How can I measure to find more info?
I've got some strange problems with my Melzi board. I've tried several USB cables but I only got a connection with a 20 cm cable.
I can connect to the printer and everything works as supposed to. The strange part is that as soon the shield/cover of the USB cable touches the computer my touch pad starts behaving erratically...
Of course this only applies when the 19v brick is connected - it doesn't matter if the board is powered by the computer or the 19v, in both cases there are problems.
Is there a short somewhere? How can I measure to find more info?