There are a number of signs that show when your power jack needs to be repaired. If you have to wiggle your power supply connector to receive power or your battery is less than three years old but won't charge, then it is likely that your DC power jack is damaged. There are other more obvious signs that your power jack is damaged such as it feeling looser, displaying cracks or changing in appearance (i.e. it is bent or there is a piece missing). If you notice any of these signs then get in touch with North Computers and we will endeavor to fix it for you within 24 hours for just £80.