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DELL Inspiron 5150 doesn't charge the battery

K

kyoq

Jan 1, 1970
0
I have a problem with my Laptop Inspiron 5150. These are the symptoms:
Without a battery and with the power adapter plugged into the
laptop...pressing the power button causes nothing, only I can observe
the two outer most LED’s of three on the front edge of the laptop to
flash on for a split second every 7 second.
With battery power and power adapter plugged in, the laptop works using
battery and no charge the battery. It seems to be a DC/DC converter that
is on the motherboard.

I disassembled the computer and on the motherboard found out among other
resistances, capacitors and stifles 4 integrated circuit:
[1] LM393 (2x one is the nearest to the battery)
[2] LM358
[3] MLAS298
I measured integrated circuit placed nearest the battery and has AC
voltage adapter on Vcc. How to test that LM393 works properly ? the
battery has little bit less voltage than normal (when is full). Maybe is
there way to cheat the battery and connect directly from AC adapter ?
On priv I can sand the picture of motherboard.
battery pins :

|
|
| [MOTHERBOARD]
|
+-^^^^^^^^^---------------------------

1.3.....9
+-^^^^^^^^^-----------------+
| |||| || |
| |||| |+- GND |
| |||| +-- GND |
| |||+------ 1,1Kohm -> GND |
| ||+------- 0,9Kohm -> GND |
| |+-------- 14V |
| +--------- 14V |
| |
| [BATTERY] |
|___________________________|

Between 1 i 2 voltage = 0V
 
A

Arul

Jan 1, 1970
0
I am also facing the same problem, did you find any workaround to fix
the problem?.
Please let me know.

Regards,
Arul
 

davewh

Jun 22, 2009
1
Joined
Jun 22, 2009
Messages
1
I NEED those photos!

And they do need to be detailed. My laptop charging broke, for me it was the whole connector had come adrift from the motherboard!!!
When I took the case apart a spare component was floating around, and its not simple to see where it has come from!
Without it the computer isn't starting (though the battery appears to charge
 

carilsaP

Nov 21, 2009
1
Joined
Nov 21, 2009
Messages
1
same problem

i will like to know if some solved this, because there are lots of use how have the same problem.
thank u

I have a problem with my Laptop Inspiron 5150. These are the symptoms:
Without a battery and with the power adapter plugged into the
laptop...pressing the power button causes nothing, only I can observe
the two outer most LED’s of three on the front edge of the laptop to
flash on for a split second every 7 second.
With battery power and power adapter plugged in, the laptop works using
battery and no charge the battery. It seems to be a DC/DC converter that
is on the motherboard.

I disassembled the computer and on the motherboard found out among other
resistances, capacitors and stifles 4 integrated circuit:
[1] LM393 (2x one is the nearest to the battery)
[2] LM358
[3] MLAS298
I measured integrated circuit placed nearest the battery and has AC
voltage adapter on Vcc. How to test that LM393 works properly ? the
battery has little bit less voltage than normal (when is full). Maybe is
there way to cheat the battery and connect directly from AC adapter ?
On priv I can sand the picture of motherboard.
battery pins :

|
|
| [MOTHERBOARD]
|
+-^^^^^^^^^---------------------------

1.3.....9
+-^^^^^^^^^-----------------+
| |||| || |
| |||| |+- GND |
| |||| +-- GND |
| |||+------ 1,1Kohm -> GND |
| ||+------- 0,9Kohm -> GND |
| |+-------- 14V |
| +--------- 14V |
| |
| [BATTERY] |
|___________________________|

Between 1 i 2 voltage = 0V
 
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