SMART Board isn't sure whether the eraser is in the tray or not!
Came across a curious problem with one of our SMART Boards today. Basically, the board has trouble telling whether the eraser is actually in the tray or not.
When you pick up the eraser, the board activates the eraser tool and goes into drawing mode as normal, but when it is replaced, the software will then 'flicker' between drawing mode and normal mode ('normal' being what you would expect when no pens or the eraser are active). It does this at a frequency of about 2 Hz. I quickly found that this appears to be a problem with the sensor in the tray. If I put my thumb over the sensor, or a piece of paper, or almost any object except the actual eraser, it can tell something is there and deactivates the eraser tool. Sometimes with careful positioning, the normal eraser will deactivate the drawing mode, but most of the time, it doesn't.
There seems to be nothing unusual/damaged about the eraser itself. It looks just like all the others. I haven't had a chance to swap it with another eraser yet (teachers tend to notice if you waltz in and steal their stuff), but has anyone seen this sort of thing before? I've tried giving the led and sensor in the tray a bit of a clean, and had a jolly good blast with an air compressor, so I don't think it's a dirt problem.