My T30 Power problem Not cahrging properly ..

[givtechnicalhelp]

I Think Sombody will Help me. I have a Thinkpad T30.
If i connect Adaptor without turnong on Laptop Battery indicator not tuning on..If once it started using adaptor without battery it will show critival battery error.
With battery if i boot by using Ac adaptor it will work and but Ampere and wattage will shows as Zero and some times it will come Ampere 6A and volt 12.6

The laptop was working on battery and not recoganizing AC adaptor .

When I connect or disconnect the power supply, It doesn't make any sound anymore! I remember a "beep beep!" when connecting charger, and another "beep beep!" when disconnecting; now I have no sound at all!

Also, the problem is with my ACPI applet:

Running on AC, it says battery charging, and it charge at full 100%.

Disconnecting AC ... it says AC power already on! but battery discharges itself as regular ... the problem is : no beep-beep, and also, no "alarms" when battery goes under 2% ... so the laptop shut down without any notice!

Reconnecting the AC, the battery will be charged again!

So it seem that the charging circuitry doesn't recognize the change of state from AC to Battery!

The only way to recognize it is to shut off the laptop, remove the battery and the AC charger, reconnect the battery and reconnect the main charger. After that, I have again the "low battery" alarms, but no "beeps" when turning on the AC charger.


I opened and inspected Mother boardboard, in that near to charger IC ADP3806 one diode named 25 is burned...Anybody know the voltage rating of this diode?means equvalent ..

[robocop]

Hi,
please check my thread: I have the same symptoms but on a T23
can you read my post and give me feedback if it's the same issue?
Thank you
http://forum.thinkpads.com/viewtopic.ph ... 975#425975