LaptopRepairYork.co.uk. Laptop repair in York & North Yorkshire by xSphere Computer Solutions. Telephone 01904 500141 LaptopRepairYork.co.uk. Laptop repair in York & North Yorkshire by xSphere Computer Solutions. Telephone 01904 500141

Laptop Power Socket Repair

a damaged laptop power socket
Damaged laptop power socket

About Laptop DC Power Jack Sockets

A laptop's power socket accepts a DC input voltage (usually in the region of 15 - 25V) from the charger, which is used to charge the battery and power the machine when the charger is connected to the mains. Obviously the jack socket experiences wear and tear every time the laptop is plugged in to charge (and the plug is taken out again afterwards).

Eventually the power socket can become loose and the connection to the laptop motherboard becomes unreliable. Some laptop power sockets are soldered directly onto the laptop mainboard, but others are connected by a short lead and are usually held in place by a small piece of plastic moulded to the laptop case. If this breaks, the socket can come loose and even disappear inside the laptop chassis.

Power socket damage can also occur due to accidents. For example it has been known for a laptop to be knocked off a table when the charger is connected, tearing the jack socket off the motherboard, or for people or pets to stand on the cord when the charger is plugged in.

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Symptoms of a Faulty Laptop DC Power Socket

a damaged laptop motherboard where the power socket has been torn away
Damaged laptop motherboard where
the power socket has been torn away

Symptoms of a faulty laptop jack socket can include:

  • The laptop battery will not charge; if the battery is flat, the laptop will not power on
    (Note: this could also be the fault of the charger: a multimeter can be used to check the charger is outputting the correct DC voltage.)
  • The laptop receives no power and the indicator light does not come on
  • The laptop jack socket feels loose
  • You need to wiggle the charger plug or hold it in a particular position for the battery to charge
  • The laptop switches between AC mains power and battery power at random

Diagnosing And Repairing a Laptop Power Socket

Having established that the laptop charger is not the cause of the problem, by checking that it is outputting the correct voltage and visually inspecting the plug and cable for damage, the next stage is to fit a replacement DC jack socket.

This almost always involves completely disassembling the laptop to gain access to the laptop main board (motherboard). If the power socket is connected to the mainboard via a lead, replacing and reconnecting a new socket is usually straightforward. However, fixing the new socket to the laptop chassis when the mounting point has been damaged is often tricky. If the jack socket is soldered directly onto the motherboard, then replacement requires desoldering the old socket, cleaning up the contacts and soldering the new socket in its place.

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