Faulty Macbook needs to be plugged in to boot....

[will0407]

I have bought a macbook 15" retina (2014) from ebay as somewhat of a 'no lose' repair project given how much I have paid for it. The seller say the issue with it is as follows;

The MacBook will not turn on unless it is plugged in during start up. The power cable can then be removed after start up and the MacBook works normally but during start up the laptop requires mains power.

They claim the battery needs replacing however given it runs fine on battery once switched on, that indicates to me the battery is ok. So if that's the case, could anyone help shed any light on what other issue it could be?

 

[_Kiki_]

this is the risk of buying faulty things, if you don't have a skills to repair you shouldn't buy

 

[will0407]

this is the risk of buying faulty things, if you don't have a skills to repair you shouldn't buy

Everybody has to learn from somewhere, anybody on this forum had to start with no knowledge of mac repair at some point- if only it were like the matrix and you could just download it into your head!

As per my original post, I have bought at a price where I know I will not lose any money even by just selling it on as is, but if I can fix it, then great.

I have followed guides to removing a macbook pro battery before, so I am comfortable taking things apart and putting them back together, I am just looking for advice on what the potential issue and fix could be.

 

[Howard2k]

NVRAM and SMC reset, but my guess it's that they would have tried this and it's a problem with the circuit in the battery or chipset. Still, worth a shot.

 

[Fishrrman]

Is there a small "daughterboard" that controls power/charging on these?
One that is [relatively] easily replaced?

Go to ifixit.com and check out the repair guides.

As was already mentioned above, the seller gave you "full disclosure" regarding its problems...

 

[_Kiki_]

NVRAM and SMC reset, but my guess it's that they would have tried this and it's a problem with the circuit in the battery or chipset. Still, worth a shot.

it's not circuit, it's a problem with logic board, you should name things correctly, if you don't know what's the name of part use google to check before you made silly posts, also you can't repair faulty logic board by doing NVRAM and SMC reset, stop messing with topics if you don't have any clue about them