troublehsooting defective DC jack, Inspiron 4150

  • Thread starter Thread starter teamgs
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teamgs

Greetings,
Before finding a used mobo ($900 new from Dell!!!), I thought I
might try repairing the issue myself. I am fairly handy with a
multitester, and soldering iron (though not so much so with PCB's).

The unit in question apparently was damaged when the family dog chewed
through the AC adapter cable. The laptop no longer recognizes that
the adapter is plugged in nor does the battery charge. However, the
laptop functions fine when connected to a docking station, and the
battery charges. The DC jack appears to be physically attached
properly to the mobo, so I believe that a something in the circuitry
from the jack was shorted.

Any suggestions to go about troubleshooting this issue, or links to
sites with more detailed information?

Regards,

Gary
 
teamgs said:
Greetings,
Before finding a used mobo ($900 new from Dell!!!), I thought I
might try repairing the issue myself. I am fairly handy with a
multitester, and soldering iron (though not so much so with PCB's).

The unit in question apparently was damaged when the family dog chewed
through the AC adapter cable. The laptop no longer recognizes that
the adapter is plugged in nor does the battery charge. However, the
laptop functions fine when connected to a docking station, and the
battery charges. The DC jack appears to be physically attached
properly to the mobo, so I believe that a something in the circuitry
from the jack was shorted.

Any suggestions to go about troubleshooting this issue, or links to
sites with more detailed information?
Click to expand...
First port of call is any diode in line with the +ve track from the DC
jack.
 
Thanks for the reply Conner

I assume that you mean check the voltage on the back end of the jac
with the adapter plugged in? I will give that a shot tonight.
will also check the output of the adapter, even though it i
supposedly a brand new unit, I don't know if the user did anything t
it

Regards

Gar
 
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