E-100 hardware trouble with S2000

[gjabla]

HI everyone. I have a small problem with my e-100. A small chip named s2000 died (blow off). I took it out and the e-100 is working again but not completly O.K. So far the only difference I noticed is, that while I am synchronising and transfering data wit PC, and I am conected to charger, the led that indicates charging turns off and the device is not charging at that time. What I noticed also is when the need for power increases like when I listen to MP3-s the device very soon indicates low on power although there is a lot of power remain in the batery. This chip has four contacts on each side and has to do something with power distribution in E-100. There are two chips with mark S2000. I took out the one that is under the rom plate. I can provide a picture if needed. Is there anyone who knows the real mark of that chip so I could buy it under another mark? A complete electronic sheme of the device would be of alot of help too.

Thanks.