Перейти к основному содержанию

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.

11вопросов Показать все

Where is connections module? (Galaxy A41)

Hi! I'm repairing my phone (Galaxy A41), and after opening it I found this part (the circled part inside the image) I don't know the name and the usage, maybe someone can help me ?

Block Image

Update (10/03/2022)

Thanks @simone_i, cause I am trying to understand why my bluetooth and wifi do not work for this reason I am looking for the connection module and see if it can be fixed, you can tell me which one it is, I have searched here on iFixit but I cannot find a guide for my phone. Thank you

Update (10/03/2022)

@jayeff thanks for your scheme, anyway they don't turn on as you can see, so I assume there is a problem with the module. Do you know a guide to do this ?and which piece I have to buy ? U3003?

Update (10/11/2022)

Today I opened the connector and I found these, the upper right part where the wifi chip (MT6631N) is located appears slightly darker than the rest of the circuit. Now I can try to change the chip and see if it works or give me your idea what the problem could be, thanks. (unfortunately I don't have a microscope, these are the best photos I managed to take)

Block Image

Block Image

If it helps, this is where they sell the WiFi/BT chip for Samsung Galaxy A41:

https://www.deviceparts.com/mt6631n-wifi...

https://it.aliexpress.com/item/400099171...

Ответ на этот вопрос У меня та же проблема

Это хороший вопрос?

Оценка 0
Добавить комментарий

2 Ответов

Наиболее полезный ответ

Hi, that's your phone's earpiece, the built-in speaker you use during phone calls.

To find out more about speakers installed on smartphones, check out this article, first paragraph after introduction.

Update (10/03/2022)

The part you are looking for should look something like this and is to be soldered on the board.

If you haven't already, to rule out any possible software related issue why not check if one the following works for you:

  • try activating wifi-Bt switches while in flight mode, then disable flight mode
  • reset network settings and try again
  • try uninstalling last google play services update
  • boot the phone into safe mode
  • soft/hard reset the device (BACKUP all your data before doing this)

Good luck with your repair, cheers

Был ли этот ответ полезен?

Оценка 2

1 Комментарий:

Thanks for your help, but unfortunately any tentative you pointed (except hard reset) hasn't been worked. Now I can try hard reset or directly open that part of the mainboard and replace that piece you linked.

из

Добавить комментарий

Hi @davebarbarian,

When you say that the WiFi and BT are not working, do you mean that you cannot turn them on or that they're not picking up any signals?

If they turn on OK try using the WiFi as close as possible to the WiFi router i.e. <10 cm and then check if it works OK.

If so you may have an antenna problem.

The WiFi antenna (also is used for BT - both work on the 2.4GHz band) is the white coax cable that can be seen running between the top and bottom boards below the battery in the image you posted. The WiFi/BT chip is very close to the end of the antenna.

I haven't checked it out but here's a link to the schematics that may help

Update (10/12/2022)

Hi @davebarbarian

I don't know what the green or pink references mean but did you check the components as shown in the Wifi troubleshooting flowchart.

Also there is a diplexer between the antenna input and the WiFi IC so if it was just not picking up signals the problem could be anywhere between the antenna and the WiFi IC and not the WiFi IC itself. If the WiFi was not turning on then most probably it might be the WiFi IC

Block Image

Block Image

(click on image)

Был ли этот ответ полезен?

Оценка 2

4 Комментариев:

Hi @davebarbarian,

Have you tried a factory reset just to eliminate software as the problem?

If not, before you try this, backup the phone to the cloud or a computer because a factory reset will erase all your data. You can restore the data using the phone's "restore feature" (found in settings) afterwards.

Check if there is any information on the U3003 chip itself.

The schematics hopefully will show its location on the board.

из

Hi @davebarbarian,

If you double click on the images you posted i.e. click once, wait till it opens then click once more you can get a zoomed in picture which shows that it doesn't look to good. Whether it is just surface grime is a bit hard to tell but it certainly doesn't look as good as other parts of the board.

Before removing the IC maybe gently cleaning using a Q-Tip lightly moistened with Isopropyl Alcohol 99%+ may clean it up to a point where you get a better idea of what is there and if it is OK or not.

The schematic should help if there is a faulty component next to the chip as it should have all the specs for the components

из

Thanks @jayeff I'm watching your schematic but what do green parts and pink circles mean since I can't find a legend ?

из

Thanks for all @jayeff. Too bad that until I have a microscope this remains an extremely advanced repair procedure, in any case thanks I have learned a lot! I see if I will succeed in the future, goodbye!

из

Добавить комментарий

Добавьте свой ответ

Davide будет вечно благодарен.
Просмотр статистики:

За последние 24часов: 1

За последние 7 дней: 2

За последние 30 дней: 20

За всё время: 543