Repairing a Dell Notebook AC-Adapter

My Dell Notebook uses a power adapter that has an output voltage of 16V at 4.5A current. One day the adapter stopped working.

I decided to try to repair the adapter. In the past I repaired several switching power supplies of PCs and also one AC-power adapter of a Asus notebook. I found out that most of the supplies had similar defects. Often they are ease to locate and to repair.

This Instructable shows how to repair a Dell Notebook AC-Adapter but using the same principles it can work with any switching power supply.

1?Things needed AND SAFETY

First of all you need the defective power supply ' The you need a screw driver. It could be phillips type or a flat blade type, depending on the power supply.In case of the Dell Notebook adapter you need a Dremel tool and a cutting disc too.To find out the dead parts you need a multimeter that contain'

2?Opening the case

The Dell Notebook AC-Adapter (