Samsung A41 doesn't charge with new USB board

Question

Samsung Galaxy A41

Released in May 22nd 2020. It's has a 3,500 mAh capacity and bears the EB-BA415ABY identification number which falls in line with the A41's own SM-A415 model number.

11回答すべてを表示

Nico @thenicnic

評価: 35

2

投稿日: 2023年5月12日

オプション

Samsung A41 doesn't charge with new USB board

Hi, I got a Samsung A41 (SM-A415F) that drives me crazy: It doesn't charge anymore. After reconnecting the USB board, charging was possible for only a short time. I replaced the battery and the phone still doesn't charge. As seen in a video (https://www.youtube.com/watch?v=tm5_fsrA...), measuring between GND and the flex cable brings exactly 5.00 VDC. The board in this device supplies as much as about 7.00 VDC. I bought a new USB board including new flex cable and this provided "naked" 5.6 VDC. After using in the phone, the output voltage also increased to about 7.00 VDC. Is it likely that there's a problem with the power IC (U5005) on the main board?

(Will remove the heatshield to gain more measurements but I have to make sure that the owner has a backup as long as it turns on.)

Thanks!

Nico

回答がありました！ 回答を表示同じ問題があります

この質問は役に立ちましたか？

はいいいえ

スコア 1

1件のコメント

@thenicnic how are you charging it? By that I mean what do you connect it too. That voltage is definitely something that would make me check U5005. What voltage do you get on your battery connector? What do you mean by this "this provided "naked" 5.6 VDC.? where did you measure that "the output voltage also increased to about 7.00 VDC"

oldturkey03 さんによる2023年5月12日

コメントを追加

1 件の回答

ベストアンサー

daniel @tech_ni

評価: 34.7千

10

22

44

投稿日: 2023年5月17日

オプション

check the fpc connector on the main board, on the a series these seem to fail

このアンサーは役に立ちましたか？

はいいいえ

スコア 3

2 件のコメント:

As @tech_ni says, the series A connectors are garbage and can cause all sorts of issues.

[deleted] さんによる2023年5月18日

Absolutely correct, thank you, that was the issue on this device as well.

Vcc didn't lead to the main PBA.

Mechanical issue! I fixed it using a thick copper wire as seen in the video.

5.6 VDC were measured with no other components attached.

Now I still get more than 7 VDC and the phone seems to be all fine with this.

Bit of a pity that I didn't find a replacement FPC connector for this device.

Edit: Oh, should be this one: Will try it if the device fails again.

https://m.de.aliexpress.com/item/1005002...

Nico さんによる2023年5月28日

コメントを追加

@thenicnic how are you charging it? By that I mean what do you connect it too. That voltage is definitely something that would make me check U5005. What voltage do you get on your battery connector? What do you mean by this "this provided "naked" 5.6 VDC.? where did you measure that "the output voltage also increased to about 7.00 VDC" — oldturkey03
As @tech_ni says, the series A connectors are garbage and can cause all sorts of issues. — [deleted]
Absolutely correct, thank you, that was the issue on this device as well.

Vcc didn't lead to the main PBA.

Mechanical issue! I fixed it using a thick copper wire as seen in the video.

5.6 VDC were measured with no other components attached.

Now I still get more than 7 VDC and the phone seems to be all fine with this.

Bit of a pity that I didn't find a replacement FPC connector for this device.

Edit: Oh, should be this one: Will try it if the device fails again.

https://m.de.aliexpress.com/item/1005002... — Nico

Samsung Galaxy A41

Samsung A41 doesn't charge with new USB board

1 件の回答

回答を追加する