Laptop Charger Wire Diagram — 3 Wire Dell

If the laptop doesn't get a clear answer (because the Blue wire is broken), you’ll see the dreaded error message: In this state, the laptop throttles the CPU speed and disables battery charging to protect itself. Common Repair Scenarios 1. Splicing a New Plug

With the charger still plugged in, keep your black probe on the wire you suspect is ground. Touch the red probe to the other wires. 3 Wire Dell Laptop Charger Wire Diagram

Do short center pin to either power rail – may damage the 1-Wire chip. If the laptop doesn't get a clear answer

Usually the Black wire (or a braided uninsulated shield). This completes the circuit. Touch the red probe to the other wires

The third wire is responsible for:

Ensure the fine strands of the ID wire do not touch the positive or ground wires, as this can permanently damage the laptop's charging circuit. DELL Laptop Charger Pin-Out Explained (For DIY Mods)