Laptop won't power up with AC adapter and won't charge battery

pepi93

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1) the laptop doesn't power on without a battery
2) the light which would indicate that the laptop is plugged into the ac adapter is not on when the ac adapter is plugged in.
3) the battery charge light is also not on, which would indicate the battery is being charged.

The battery does not charge...
The AC adapter is fine, tested with other laptop.
The battery is also new and works fine

I took the laptop apart. Took out the DC Jack and tested it separately.

I used a crappy non digital volt meter. Set it to 50 DC V. Plugged the DC Jack into the AC adapter...

There are 2 red 2 black. Each red shows 8V exactly.

I plugged the dc jack into the motherboard with the AC adapter connected, with the motherboard out and proceeded to test the various contact points on the 4 pin connector with the dc jack plugged in. I tested contact points on both sides of the motherboard on the soldering points. Each time getting the 8V reading.

Thanks for the help
 

pepi93

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well the adapter is fine because I checked it on another laptop...

sorry, I don't know what that actually means "short circuit" on the motherboard....

do I need a new motherboard?

the thing is...I was also only getting 8v on each red wire when I had just the dc jack connected to the ac adapter alone...

 

pepi93

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Correction, I'm an i diot and don't know how to read my volt meter properly.

I'm getting 19V coming from the AC Adapter through the DJ Jack and those are also the same values when testing the connectors on the motherboard while the dj jack is plugged in.
 

pepi93

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you mean the little tiny white rectangle shaped thing with golden metal ends and it says E8A on it or something? so I just keep the dj jack plugged in and use the volt meter, touch each end?


 

pepi93

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ok both ends show 19V and one spark, not sure what I touched...I also accidently touched this little thing next to the fuse which emitted a spark as well...*hides in shame*
 

pepi93

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I found the PAD6205 and if you're just referring to touching the soldering contact point that's there it shows no reading at all...I even dug the probe a little bit in because I think these motherboards have a coating on them to protect from electrical surge?
 

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