Hi everybody well I bought my Nokia N800 about 6 months ago instead of buying the Ipod touch and right before the N810 was announced (don't regret buying N800 and enjoy it). But recently I've noticed a low but audible whine or higher pitched screach, still not loud. It seems to happen when I go to a more resource intense website but it does seem to come about randomly.

I didn't do to much testing but I did just see if the battery was overheating, (after ducking and covering behind a pillow just incase the noise was a warning sign that it was going to explode ) which it didn't seem to be hot. If anybody has any suggestions on what can be causing it or what too do that will be great because even though the Newer N810 is awesome, I just can't fit it into my budget!

p.s. From what I can hear it doesn't seem to be coming from the speakers.

Sometimes, I notice my laptop's CPU making a high pitched whine (google cpu whine) and it varies with load, since it's supposedly related to the CPU's sleep states. I can't say whether that's your problem, but it could be.

Ya that's another one of the issues I thought about right away and was hoping it wasn't a cpu whine . But thanks for the suggestion keep them coming! Hopefully someone else has had this similar problem and can share some feedback aswell !

Palm PDA's used to suffer from something called "screen whine". This was where the CPU ran in such a way that it caused the screen to resonate. The cure for them was to tweak the CPU clock speed.

Don't know of any way to adjust the N800's clock speed other than by installing OS2007!

My guess is that it is the internal power supply...

It uses multiple voltage rails that are done with switching converters, and sometimes the inductors used in those converters can become noisy due to either coil coming loose from the ferrite (glue giving up), or the actual ferrite has cracked or the ferrite halves have come apart (glue giving up).

You should hear a difference if you try to tap the unit. Once the coil/ferrite position changes the noise level should change. If that is the case, it seem 99% correct diagnosis...

I think the biggest source of whining on the NIT platform exists on this board