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How to measure a short on MacBook

E

Erarepair

New member
How do I measure for a short on MacBook. What am expected to see eg if there is short pp1v8_s5, when I measure such, what am I expected to see as a short to ground. Or. If there is short on ppbus_g3h. What value will I see for me to conclude it’s a short. Pls guys am new here but I have been fixing boards for some time now and seem not to understand what a short really is.
Basically how to measure short on MacBook is my problem.
Thanks guys as I await response.
 
2informaticos

2informaticos

Administrator
Staff member
First of all, welcome to the forum!

"I have been fixing boards for some time now and seem not to understand what a short really is."
How did you repair them, whitout knowing what a short is?

There is no difference to measure on normal laptop boards, or Apple made.
Power rails and signals name can change, but working manner not.
Some names are still the same as in normal boards.
Even between normal boards, any designer use the names he likes; there is not a standard at all.
I say more easy with Apple, as mostly same names used for years.
Slightly changes when platforms change; like new names, caused by new signals, power rails.

Keep in mind, the forum goal is to help in repair process; with a particular board you have on the desk.
In this time, the replies provided also help you to understand something.

Reading as more threads as possible (not only personal ones), also provides lot of useful information.
I recommend you to start reading this thread:

HOW TO collection

I hope this "How to" collection will help our members. I will possibly modify this post in time, if updates available. Trigger SMC_ONOFF_L (PMU_ONOFF_L): It reffers to simulate power button function, when the keyboard is not connected. We need to do this when we work with the board...
boards.rossmanngroup.com boards.rossmanngroup.com

For personal training, please contact Rossmann staff...
 
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