ikon wallplate with video amplifier
I've just come across what has to be one of the oddest issues I've seen since I've been here.
In one of our rooms, they've managed to fry the hard disks of 5 laptops since the beginning of the year. Looking at one that was misbehaving today, I discovered that if I unplugged the VGA connector, all was well. As soon as I plugged it in, the machine would start acting up and then ultimately just go blank.
After inspecting the wallplate which the stuff connects to, I discovered that it has its own power supply - a 5v DC connection which is provided by a power brick. This, when turned on and off, seems to connect and disconnect the VGA signal to the projector.
Now, the thing is, the length of the cable is only about 4m long in the first place, which is one of the shortest in the school. Why would an installer (the same installer who did the room next door, and didn't include this amplifier plate) put this amplifier plate in?
Anyone else come across similar issues?
I have decided to buy a replacement plate and reconnect everything up *without* an amplifier. This seems to be the only possible culprit of the bizarre laptop deaths.
Edit: this is the panel: http://www.ikonavs.com/DADO_WB_BU.html