Dell Inspiron M5030 Laptop Power Problem

Serviced a Dell Inspiron M5030 laptop that what appeared at first to be a broken dc power jack. The Dell M5030 laptop ran on battery, but no power from power cord, and battery would not charge. The dc jack from outside of the laptop was solid, was not loose and did not wiggle. Power cord tested fine with a volt meter test on the cord & plug, and trying another power cord with the same no power on result, I ...

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