In this guide, we’ll walk you through the process of diagnosing and repairing a MacBook A1708 that won’t turn on.
We’ll cover everything from initial assessment to successful repair.
Firstly, CD3215 chips in the MacBook need to communicate with its charger for it to work properly.
These chips request 20 volts instead of just five for smooth operation.
Next up is checking PP3V3_G3H – an essential rail required for powering the MacBook.
However, upon examination, this doesn’t seem to be causing any issues here.
The actual problem seems to lie within another power rail called PPBus_G3H where there’s likely a short circuit disrupting normal functions.
To confirm this suspicion, I check if there is a short-to-ground connection present.
After confirming these suspicions about a possible CPU MOSFETs being at fault via resistance check between them and PPBus_G3H fails;
I focus next on finding potentially faulty components elsewhere on the board using hot tweezers as tools of choice.
A suspected malfunctioning capacitor was then carefully removed from the board which seemed like it could have been causing all these troubles!
And voila!
Removing what turned out a problematic capacitor finally allowed our previously non-functional MacBook to start working again – indicating successfully resolving the short-circuit issue at hand!
Lastly comes the final test: booting up the repaired machine to see whether or not the problem has truly been fixed once & forever — luckily enough turns out yes!
Our fully functioning laptop boots successfully now showing us clearly how effective troubleshooting can save days when dealing with tech problems.
To sum things up: Diagnosing & fixing a non-starting Macbook A1708 involves a thorough understanding technical aspects involved along with smart usage of various diagnostic tools right amount of patience and meticulousness during the whole procedure results in the successful restoration back full functionality of the device under consideration even after facing serious electrical faults such as one discussed above today’s lesson learned – never underestimate power good troubleshooting!
