Toshiba not recognizing AC adapter when turned on...

My Toshiba Satellite A300 is having the following problem:

- When the laptop is turned OFF, the computer recognizes the AC adapter and charges the battery.
- When the laptop is turned ON, the computer DOES NOT recognize the AC adapter. It uses the battery until its depletion.


I'm only able to charge the battery with the laptop turned off. I've already tried several AC adapters and the same symtoms persist.
What could this be?

 

What happens when you remove battery, laptop off, then plug in adapter? You might try batery out and no adapter then hold the power button on for 15 sec, then try power again.

 

No battery, with the AC adapter plugged in doesn't work. The laptop doesn't boot and seems to receive no energy.

The 15 seconds trick didn't work either.

 

sounds like a dodgy power connector on the motherboard, so only the charging circuit is working and only when the battery isnt being drained (by the laptop being powered on)

 

Do you know where it is located, inside an A300?

 

So it charges battery with laptop off? Do you have a DVM or VM to check your AC bricks voltage output? The voltage out is stated on brick. I'm guessing 19VDC. Do you have easy access to a second AC brick for test?

You should be two wire like this? http://www.zlectronic.com/product/For-Toshiba-Satellite-A300-A305-DC-Power-Jack-w--Cable.html

 

The problem was probably due to faulty assembly (by me). I've opened the laptop and reassembled it and now seems to be working.

But I didn't do anything different in the reassembly. Weird.

 

LOL, glad its working. Funny that while the forums are trying to help it's important to give full disclosure to save bandwidth, no?

I had to redo our dryer due to a missing tool that slipped unoticed down the lent trap..stuff happens.