High Pitch noise

[stonepro]

Help!!!

I have a 2215, and now 4155 (which does have the yellow tint, by the way) and they both have the same problem... there is a high pitch sound that is coming from the bottom of the unit.

Has anyone else heard this?

[stevey500]

Are the ipaq's led backlight?? Well, Most the time it is the inverter for the backlight. All the pocket pcs that I have had do this.

[ctmagnus]

The squeal increases as the backlight is turned up, so I suggest playing with the brightness settings until you get an acceptable tradeoff between brightness and squeal.