Power input
We test the charger, cable, port and charging circuit to confirm stable power reaches the MacBook.
MacBook diagnostics • Grey Lynn, Auckland
MacBook Not Turning On?
A black screen does not always mean a dead MacBook. We test the charging path, battery, display and logic board to find the actual fault before recommending a repair.
Quote before repair
Component-level expertise
Current MacBook models
90-day repair warranty
Diagnosis before guesswork
Find out why your MacBook will not start
A MacBook that appears completely dead can have several very different causes. It may not be receiving power, the battery may no longer accept charge, the display may be dark while the computer is running, or a fault on the logic board may be stopping startup.
Our Auckland technicians begin with non-destructive checks and measured diagnostics. We confirm the model, symptoms and recent history, then test the charger, USB-C or MagSafe input, battery communication, display response and power rails. You receive a clear explanation and quote before chargeable work proceeds.
No lights or charging response
Black screen but signs of power
Starts only with charger attached
Stopped after a spill or impact
What we test
Common causes of a no-power MacBook
Good diagnosis separates a straightforward power problem from a board-level fault and helps avoid unnecessary parts replacement.
Battery health
A failed or deeply discharged battery can prevent normal startup or make the MacBook shut down immediately.
Display response
Backlight or display faults can look like no power even when the MacBook is booting and producing an image.
Logic board
Power-rail, liquid-damage and component faults are assessed under controlled bench conditions.
A clear repair process
From dead MacBook to informed decision
01
Bring it in
Tell us what happened, what charger you use and whether there were warning signs.
02
We diagnose
We check power, battery, display and board-level behaviour using model-appropriate tests.
03
You approve
We explain the fault, repair options, price and expected turnaround before proceeding.
04
Repair and test
Approved work is completed, then startup, charging, sleep and stability are verified.
MacBook no-power questions
Frequently asked questions
Why is my MacBook completely dead?
Possible causes include a charger or cable fault, a damaged charging port, a failed battery, liquid damage, a display problem or a logic-board power fault. Testing is the reliable way to separate them.
Could it be on even though the screen is black?
Yes. A MacBook can boot with a failed display, backlight or display connection. We check for signs of startup and external-display output during diagnosis.
Can you repair the logic board instead of replacing it?
Where practical, 73inc performs component-level logic-board repair. The best option depends on the fault, board condition, model and repair economics, which we explain in the quote.
What should I do if it stopped after liquid contact?
Disconnect power, do not keep trying to start or charge it, and arrange an assessment promptly. Repeated power attempts can increase corrosion or electrical damage.
Will my files still be there?
Many no-power repairs do not affect stored data, but no repair can guarantee data until the storage and board condition are assessed. Tell us immediately if your files are the priority.
How much will the repair cost?
Cost depends on whether the issue is power input, battery, display or logic board. We diagnose the fault and provide a quote before chargeable repair work proceeds.
Get your MacBook properly diagnosed
Visit 73inc in Grey Lynn, Auckland, or contact us first to discuss the symptoms.