メインコンテンツにスキップ

修理を始めるには

修理する権利

ストア

2015年3月にアップデートされたAppleのMacBook Pro 13" Retina Display Early 2015 はモデル番号はA1502、第5世代のIntel Core i5と i7プロセッサーが特長でForce Touchトラックパッドを備えています。

966の回答 すべてを表示

DC-in, battery or board? Battery not recognised, boots with charger

Quick question: System does not recognise battery (have tried many things - not removing and reconnecting battery yet). Pretty sure it is a hardware issue as I did a system restore (downgraded to Catalina). How can I tell for sure whether there is an issue with the DC-in magsafe (cheap to repair so worth trying), the battery (replacing migh be an option) or the logic board (no way I proceed)?

More details if you care to read and help :)

Macbook Pro A1502 (EMC 2835) -bought late 2016- was working perfectly. No heavy use. During lockdown I brought it home and without access to my original charger I was using a spare one from an older macbook ( 60W magsafe1, i used a magsafe 1 to 2 adaptor). Had updated to Big Sur 2-3 weeks ago with no issues. All fine until one day the laptop could not charge. No liquids, no updates - just out of the blue. Pressed power button for long time - could only see a red battery symbol when charger was on. No other response, nothing when charger unplugged. I did SMC reset (system could not restart so no NVRAM reset).

Nothing worked -tried many things- until I did the following (found this in a post here - so thanks ifixit!): I pressed the power button for 10secs (with power cable off), following another 10 with cable on and then pressed the power button again- unexpectedly the system started!

Fans were running loud but system could reboot. I was able to install Catalina (with using a bootable usb -it took some time and fans were loud all the time) , in case there was an issue with the OS, did SMC and NVRAM resets couple of times. Issue is still here. Not sure if a clean install would help.

Now, the system cannot see the battery (as suggested in other posts) that might be the reason for the funs running constantly and loud. I had no warnings that there were issues with the battery in the past.

Anyone has any advice on what else to try? I am awaiting for a set of tools (don’t have a P5 screwdriver) to open the laptop. I am planning to disconnect the battery to see if the system will recognise it. Any help on how to do it properly? Will check if battery is swollen but I need an expert opinion on how to identify whether the issue is the dc-in (I could do it myself as the cost is low - 10 GBP/USD) or sth else.

No access to my office to get the original charger (due to covid), no apple store open here. How can I be sure it is the battery or the logic board? If it is the latter I will just leave it. If I am sure it is the battery I will probably get it fixed - not sure if I will try this myself mainly as I don’t want to mess with removing the adhesive.

Is there any way to tell which of these components is the issue ?

Many thanks in advance - Chris

この質問に回答する 同じ問題があります

この質問は役に立ちましたか?

スコア 0
コメントを追加

1 件の回答

Maybe you could use a multimeter and read the voltage on the pins of the cable that connect to the battery. I think 3 power pins carries 12v and 2 data pins 3.42v, other pins are ground (someone could correct me if i’m wrong for the voltage). So if you have voltage on theses pins the logic board should be OK. Would be useful if you can find online the schematic and boardview files for your logic board.

この回答は役に立ちましたか?

スコア 0
コメントを追加

回答を追加する

Chris Kø さん、ありがとうございました!
統計データを表示:

過去 24時間: 0

過去 7 日: 0

過去 30 日: 0

今までの合計 34