Have a dell Inspiron 1545 laptop and the DC jack (in 19.5v/3.3~4.4a) on the power board is damaged and I don't have an original charger cable but I have a charger (out 20v/2a) for another laptop with a different connector at the end l. can I cut the connector tip, it has the same three wires like a Dell and wire them directly to the back of the dc jack on the power board connector?