Special Edition Usb Port Broken And No Spare Parts To Buy ! Be Careful


Zhell

Members
Jun 22, 2017
4
1
Hi everyone,

I just spent the last 2 days investigating the reason why my 9 months old Xiaomi Redmi Note 3 Pro SE was not charging anymore. At first I believed it was due to a faulty charger or cable so I tried many, then I believed it was a faulty battery so I unmounted it and managed to charge it with external battery cells, up to 5%, enough to start the phone and realize it is not a battery problem.

So I turned to the USB and unmounted that one, and then I measured the voltage between the VCC and GND pins while the phone being charged, and here I found only 0.09V where I should have found 5V. So clearly this is a broken usb port, even if I have always handled my phone with great care.

The salty thing is... there is not spare parts to buy for the pro SE version ! So it is totally impossible to find anywhere a new usb dock (reference "H3B_UB"). So after 9 months, I lose all my data and my phone is good for trash. Yeah \o/

This was my first experience with Xiaomi and I recommended it to many relatives before this. Now I'm so disappointed with them.

Any ideas about what to do from now ?

PS: apparently many people have had this problem as you can find several forum threads if you search "H3B_UB" on google
 
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Reactions: Mi_bovvered

Zhell

Members
Jun 22, 2017
4
1
this site is well known on forums discussing the topic, it is a fake, the part has been displayed for months but never was available, and they always say "it will be available in 15 days" if contacted. I think they just saw that there was high traffic for this search term and made use of it. As I explained, since the phone was not released in china, xiaomi already answered several users that there will be no replacement parts to buy
 

Tobee

Members
Sep 8, 2015
35
20
Maybe its just a soldering issue/broken leg on the USB port. Have you investigated with a magnifier? Otherwise try to find a guy that is capable of chinese language and could search on taiwanese shop sites for you.
 

Zhell

Members
Jun 22, 2017
4
1
Maybe its just a soldering issue/broken leg on the USB port. Have you investigated with a magnifier?
Thanks for your answer. I do believe it is a soldering issue on the microUSB port, since I did not measure the right voltage on it despite haven't been able to spot anything with a magnifier, but the problem remains: even the microUSB port is a specific part of the SE version, and no spare parts can be found. So I have hope that I may be able to make the microUSB port from the RN3 or RN3pro fit the RN3proSE dock, but not sure until I have tried.

Otherwise try to find a guy that is capable of chinese language and could search on taiwanese shop sites for you.
Do you mean that spare parts can be found in taiwan ?
 

Tobee

Members
Sep 8, 2015
35
20
Thanks for your answer. I do believe it is a soldering issue on the microUSB port, since I did not measure the right voltage on it despite haven't been able to spot anything with a magnifier, but the problem remains: even the microUSB port is a specific part of the SE version, and no spare parts can be found. So I have hope that I may be able to make the microUSB port from the RN3 or RN3pro fit the RN3proSE dock, but not sure until I have tried.



Do you mean that spare parts can be found in taiwan ?
Yes because the SE version was originally made for Taiwan to match specific local B20 requirements. This is one reason why it was so hard to get accessories at the beginning.
 
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ackblom

Members
Aug 2, 2017
5
13
Looks like my gf has just joined the club. Her RN3P SE stopped charging last weekend. It's no longer being detected by PCs/laptops either and it resets USB controllers when connected to them. I even managed to kill one port in my 5-port Anker charger while trying to troubleshoot the issue. It seems there are quite a few threads on different forums describing the very same problem but no solution.
 
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Tobee

Members
Sep 8, 2015
35
20
Looks like my gf has just joined the club. Her RN3P SE stopped charging last weekend. It's no longer being detected by PCs/laptops either and it resets USB controllers when connected to them. I even managed to kill one port in my 5-port Anker charger while trying to troubleshoot the issue. It seems there are quite a few threads on different forums describing the very same problem but no solution.
Try this: http://www.cellspare.com/redmi-note-3-special-edition-parts

Edit: have just seen that somebody already posted the link.
 

ackblom

Members
Aug 2, 2017
5
13
Thank you. That's not the right part though and this link has already been posted in several forums. They never had it in stock and they always reply "in 15 days" when asked about availability.
 

Tobee

Members
Sep 8, 2015
35
20
Thank you. That's not the right part though and this link has already been posted in several forums. They never had it in stock and they always reply "in 15 days" when asked about availability.
Did somebody ever try to order it? It might take a few more months before its available if there is demand. Just like the replacement screens. Mine is now about 10 Months old and i was considering to sell it just like for the reason of poor spare parts availability.
 

ackblom

Members
Aug 2, 2017
5
13
Did somebody ever try to order it? It might take a few more months before its available if there is demand. Just like the replacement screens. Mine is now about 10 Months old and i was considering to sell it just like for the reason of poor spare parts availability.
Just asked them whether they'll ever have it in stock. Will see what they say.

Either way, don't think it's the right part mate. Take a look at the pictures I attached. RN3SE has 4 antenna ports while this board has only 3. Unfortunately the port on the right side is actually being used in RN3SE. Apparently this phone was released for Taiwanese market because they utilise band 20 there. Some people say this is the only place where we could try looking for them. Unfortunately, I don't speak Mandarin or know anyone who does.
 

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ackblom

Members
Aug 2, 2017
5
13
Thank you Pertti. Sent them an email. Hope they get back to me with some good news.



Update:

Here's the reply I received:

"Hi dear ,
I am sorry but this usb charge board for red mi note 3 special edition still not available yet .
Best regards !
Athena"


Update 2:

and here's the reply I received from ********** seller:

"Hello my friend

I am so sorry for that

It in most case, was caused by improper usage.

The warranty of our store is 6 months , so now please go to local post to repair it ok?

Next time when you order in our store again, we can give u 2-3$ discounts.
I hope u can understand
Best regards,
Wonderful day to you!
Coco"
 
Last edited:

jc rey

Members
Feb 15, 2016
1,538
142
Did somebody ever try to order it? It might take a few more months before its available if there is demand. Just like the replacement screens. Mine is now about 10 Months old and i was considering to sell it just like for the reason of poor spare parts availability.
Already sold mine for same reasons.
 

ackblom

Members
Aug 2, 2017
5
13
RN3P (kenzo) - RN3P SE (kate) : cut/remove the security diode on the USB card. If it doesn't work, remove also the security diode on the motherboard.
Explanations and screenshots :
Thank you! Just managed to bring my girlfriend's dead RN3P back to life by knocking off the USB charging board diode with small flat screwdriver.
 

kyosev

Members
Jan 16, 2016
33
20
RN3P (kenzo) - RN3P SE (kate) : cut/remove the security diode on the USB card. If it doesn't work, remove also the security diode on the motherboard.
Explanations and screenshots : http://forum.frandroid.com/topic/25...e-charge-plus/?do=findComment&comment=3768699
Thank you very much, Kuan! My Redmi note 3 pro prime had short circuit on the input power line. The problem was burnt diode on the little board. As you adviced us, I take off that diode and the phone started to charge. I used Tronsmart QC charger, so I think it was the problem. I will never use QC chargers with non QC phones again.

Изпратено от моят MI 5 с помощта на Tapatalk
 

MichalO

Members
Jan 17, 2018
2
1
Hello,
Removing both diodes did not work - phone still not charging - Redmi Note 3 Special Edition.
Any suggestions?
 

Mi_bovvered

Members
Aug 12, 2018
6
5
Just asked them whether they'll ever have it in stock. Will see what they say.

Either way, don't think it's the right part mate. Take a look at the pictures I attached. RN3SE has 4 antenna ports while this board has only 3. Unfortunately the port on the right side is actually being used in RN3SE. Apparently this phone was released for Taiwanese market because they utilise band 20 there. Some people say this is the only place where we could try looking for them. Unfortunately, I don't speak Mandarin or know anyone who does.
Hi i'm also looking for the charging port. I speak mandarin, maybe we can try to find it together?