Hard­ware has­sles

Learn to de­tect com­mon is­sues with your Mac’s hard­ware

Mac|Life - - FEATURE -

41 Deal with an over­heat­ing Mac

If the fans on your Mac are con­stantly run­ning, or it’s un­com­fort­ably hot to the touch, there may be a hard­ware fault. Place the ma­chine on a hard sur­face to al­low bet­ter air cir­cu­la­tion; Ap­ple rec­om­mends a max­i­mum op­er­at­ing am­bi­ent tem­per­a­ture of 95° F. If the fans are still run­ning con­stantly, try per­form­ing an NVRAM re­set (see

bit.ly/re­set­nvram). Noisy fans and over­heat­ing can be caused by soft­ware, such as Spot­light rein­dex­ing, so con­tact Ap­ple Sup­port before you take your Mac to a re­pair cen­ter.

42 What does this startup sound mean?

Macs some­times beep on startup; the num­ber and fre­quency of th­ese beeps can help you un­der­stand an is­sue with your Mac. If you hear a beep ev­ery five sec­onds, no mem­ory mod­ules are de­tected; three beeps means the mem­ory hasn’t passed the in­tegrity check. If you hear three long, then three short beeps, the Mac’s firmware has been cor­rupted, and you need to take your com­puter to a re­pair cen­ter.

43 De­tect a faulty charger

If your MacBook isn’t charg­ing, check that its power adapter is cor­rectly con­nected and try a dif­fer­ent wall socket. If this fails, remove the charger and in­spect the charg­ing port on your MacBook to make sure there are no for­eign bod­ies in it. Care­fully ex­am­ine your charger for any frayed or ex­posed wires. If you find any­thing, take the MacBook and charger straight to an au­tho­rized re­pair cen­ter. If the ca­bles and port seem in or­der, try per­form­ing an SMC re­set – see bit.ly/

restsmc for in­struc­tions.

44 Iso­late hard­ware is­sues

Is­sues with your Mac, such as no sound, the dis­play ap­pear­ing in­cor­rectly, or slow per­for­mance, can be caused by both hard­ware and soft­ware is­sues. If any er­ror mes­sages ap­pear, make sure to copy them down ex­actly. Also note down the time they’re hap­pen­ing. Next, go to get­sup­port.ap­ple.com on a work­ing de­vice to chat to Ap­ple Sup­port, which will be able to tell you if it sounds like there’s a hard­ware prob­lem with your Mac.

45 Check your war­ranty

Visit check­cov­er­age.ap­ple.com and en­ter your se­rial num­ber to check if your de­vice is in war­ranty or cov­ered by the Ap­pleCare Pro­tec­tion Plan.

In ad­di­tion, the Uni­form Com­mer­cial Code, which all states have adopted in some form, pro­vides an au­to­matic “im­plied war­ranty of mer­chantabil­ity,” which guar­an­tees that con­sumer prod­ucts are free of sub­stan­tial de­fects and will func­tion prop­erly for a rea­son­able pe­riod of time.

What’s “rea­son­able” varies from state to state and de­pends on the prod­uct, but gen­er­ally the pe­riod is limited to four years by law.

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