Macbook A1398 2013 820-3787-A not charging

[DeniS182]

Hi all,
I have problem with this macbook. Laptop works fine on the magsafe charger but not working from battery and not charging. There is no battery sign in macOS, in system info: battery cycle count 0, charging no, battery capacity 0.
Battery is new, old was "bloated" ..
On board I have 11.5V when Magsafe connector is disconnected. Now I don't know if my new battery is bad or I have same problem on board... how to check it please? maybe check sda, scl with oscilloscope?

And I try SMC reset, pram,nvram and nothing help.
Led on magsafe connector is orange.

Thanks for any help.

[rookieme]

Re: Macbook A1398 2013 820-3787-A not charging

Do check R7151 & R7152 , if one is blown battery won't charge
Check at J7050 voltage at 5 & 6 pin without battery [should be 3,3V] and after with battery, if you notice voltage drop with battery [from 3,3V down to 2V] then bad battery.

[reformatt]

Re: Macbook A1398 2013 820-3787-A not charging

Try a known good battery as many replacements are complete garbage. Anything marketed as genuine is usually the complete opposite.

Batteries actually marketed as aftermarket are typically more trustworthy. I've been using the range from 'Mr Crazy Victor' on eBay for MAC's and these work great.

[DeniS182]

Re: Macbook A1398 2013 820-3787-A not charging

R7151 and R7152 are good. SCL signal was shorted to ground 2ohms by U7100. I order new chip and test. Thanks

[DeniS182]

Re: Macbook A1398 2013 820-3787-A not charging

It works fine after U7100 was replaced.