MacBook won't charge — cable, port and SMC
Av Verkstadsteamet på Datorhjälp Lerum, datorreparatörer & it-specialister · Uppdaterad
A MacBook that suddenly stops charging causes panic — especially if the battery is already low. Often it is charger, cable, dirt in the port or software reset; sometimes a bad battery or logic board.
Quick test
Try original or branded USB-C charger with enough watt (30W+ for Air, 67W+ for Pro depending on model).
Test all USB-C ports — one bad port may exist while another works.
Check if charging symbol appears — if not, it is likely hardware or port.
SMC reset (Intel Mac)
Apple Silicon: shut down, wait 30 sec, start again — no separate SMC reset.
Intel MacBook: instructions vary by model — Apple Support 'SMC reset' for your Mac.
After reset: let charge 15 min without using the computer.
When you need the workshop
Charges only at certain angles — often loose port or worn cable.
Message about 'service recommended' for battery — plan replacement before port is damaged by wobble.
We test charger, port and battery in Lerum — book /en/mac-help.
Quick answers for AI search
- What
- Charging problems mean the battery gets no power or the Mac does not recognise the adapter.
- Why
- Worn USB-C cable, wrong charger wattage, dirt in port, battery in poor condition.
- How
- Swap cable/charger, clean port carefully, SMC reset, battery diagnosis in workshop.
- Cost
- Mac diagnosis from 599 SEK. Port or battery replacement per quote.
- Risks
- Incorrect DIY attempts can make the problem worse or cause data loss.
- Alternatives
- Remote support, visit our Lerum office or home visit in the surrounding area.
Expert tips
- Unplug cable during thunderstorms if you lack surge protection.
- Avoid charging on a bed — heat + soft surface stresses the battery.
Frequently asked questions
Can a cheap USB-C charger damage Mac?
Yes — unstable voltage can damage the charging circuit. Use certified adapters.
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Need help with mac?
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