I Have Ibook G4 12" and recently bought charger replacement form EBay (refurbished form china i.e. not the original one, but with one year warranty) Once I tried it, it gave me little electric shock through the computer so I send it back. Now I got another one from another seller and it does not work either, I am starting to think that it is actually my computer that is not working, or the first charger burned something such DC-in board. I run tech tool pro extensive test and it seemed to be all fine, the charger should be 45W I get from system profiler this: AC Power: System Sleep Timer (Minutes): 10 Disk Sleep Timer (Minutes): 10 Display Sleep Timer (Minutes): 5 Dynamic Power Step: Yes Reduce Processor Speed: No Automatic Restart On Power Loss: No Wake On AC Change: No Wake On Clamshell Open: Yes Wake On LAN: Yes Wake On Modem Ring: Yes Display Sleep Uses Dim: Yes Battery Power: System Sleep Timer (Minutes): 5 Disk Sleep Timer (Minutes): 10 Display Sleep Timer (Minutes): 1 Dynamic Power Step: No Reduce Processor Speed: Yes Automatic Restart On Power Loss: No Wake On AC Change: No Wake On Clamshell Open: Yes Wake On Modem Ring: No Display Sleep Uses Dim: Yes Reduce Brightness: Yes Battery Information: Battery Installed: Yes First low level warning: No Full Charge Capacity (mAh): 4272 Remaining Capacity (mAh): 2424 Amperage (mA): 0 Voltage (mV): 11064 Cycle Count: 215 AC adapter cannot charge battery: Yes AC Charger Information: AC Charger (Watts): 26 Connected: Yes Charging: No Hardware Configuration: Clamshell Closed: No UPS Installed: No I am on very tight budget and hence unfortunately I only can afford these cheap chargers (not very smart choice) should I replace the DC-in board and the cable? When I connect the charger the icon shows that the charger is connected every few seconds. Or is the charger dysfunctional as it shows that it is only 26w? Thanks a lot!