PX5 Loose internal wire help - MTCD Hardware Development

Can anyone help identify where the loose red wire should connect on my PX5 unit?
It stopped working and opening it up, this wire is loose but was clearly connected previously. Unfortunately I can't see where.
Any help much appreciated!

I'm not sure but it seems like it was near the other red one, you can check it.
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[Q] What's this wire and where can I find one?

There is a white wire inside my note, connected to the charging port/antenna board. Here's the issue, when I went to disconnect the wire, the end came off and without the wire, I'm unable to gain a signal If you know the name of the wire, or where i can get one, please let me know
What where you doing poking around inside your device?
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
thekeegs312 said:
There is a white wire inside my note, connected to the charging port/antenna board. Here's the issue, when I went to disconnect the wire, the end came off and without the wire, I'm unable to gain a signal If you know the name of the wire, or where i can get one, please let me know
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Click to collapse
check out mobiletechvideos.com they may have the part out are looking for there.

[Q] What all needs to be connected to power on?

Got my LGOG to see if digitizer was loose or what not. Do you have to completely reassemble(screws included to get power on? I'd rather know it works before having to put back together. Anybody have any clarification about this? Thanks ^_^
addisonxi said:
Got my LGOG to see if digitizer was loose or what not. Do you have to completely reassemble(screws included to get power on? I'd rather know it works before having to put back together. Anybody have any clarification about this? Thanks ^_^
Click to expand...
Click to collapse
as long as all the separate boards are connected to each other properly (if you had to disconnect them) you don't need to fully reassemble it.
As long as it has power from the battery connector, you're good. screws dont matter. just be careful depending on how much of it you have hanging free outside of the case (if any)
the back cover connections are only antennas for NFC and WiFi so they dont need to be connected either.
-edit- the very bottom l shaped one with the speaker is the main antenna, I don't think even that needs to be connected, it might throw a fit in the software but you won't hurt the hardware with that not connected, but its only a press fit plug anyway so..
[r.]GimP said:
as long as all the separate boards are connected to each other properly (if you had to disconnect them) you don't need to fully reassemble it.
As long as it has power from the battery connector, you're good. screws dont matter. just be careful depending on how much of it you have hanging free outside of the case (if any)
the back cover connections are only antennas for NFC and WiFi so they dont need to be connected either.
-edit- the very bottom l shaped one with the speaker is the main antenna, I don't think even that needs to be connected, it might throw a fit in the software but you won't hurt the hardware with that not connected, but its only a press fit plug anyway so..
Click to expand...
Click to collapse
Thank you very much! I have to wait for new lcd/digitizer anyway :-/. But atleast now I know for future reference. You the man!
addisonxi said:
Thank you very much! I have to wait for new lcd/digitizer anyway :-/. But atleast now I know for future reference. You the man!
Click to expand...
Click to collapse
No problem, here's the service manual for reference also: https://app.box.com/s/aul9oyk1q1bx7ykjala0
courtesy of @adfurgerson for the link

Xiaomi MI Box (MDZ-16-AB) doesn't have an antenna. You can add one easily.

I have two Mi Boxes. Both have lousy WiFi reception. I finally decided to open one up and see if I could re-position the antenna or replace it. To my surprise, there was no antenna. I opened my other Mi Box and it didn't have an antenna either. There is a little plug for the antenna, but the antenna itself is missing.
The antenna plug is the same one found in most laptops and WiFi cards, variously called an IPX, IPEX, or U.FL plug. You can buy antennas with this plug on ebay or Amazon for about $2. They come as little flags you can stick down or little pcb boards which can have 5dbi or more gain.
I got a couple of 8dbi gain pcb antennas. The can be positioned inside the Mi Box case, but I drilled a small hole and ran them outside where they are clear of the electronics and big steel heatsink and can be aimed at the router. No soldering, just open the Mi Box, take out the four screws that hold the motherboard. Slowly pull off the motherboard which is stuck to the heatsink, and then plug in the antenna. Simple.
My WiFi download speed has almost tripled from less than 10mbs to almost 30mbs. I get 20mbs even through my VPN. I now can stream 1080 HD movies on Netflix without stuttering or buffering.
Spend $2 and 15 minutes work and you won't hate your Mi Box anymore.
Make sure the antenna will do 5ghz
I almost forgot, make sure you get an antenna that will work for both 2.4ghz and 5ghz.
Sound intressting ... maybe you upload a photo of the antenna ? wich type ?
Thanks in advance Dr Vega
Greetings Phil from Belgium
Pilsor said:
Sound intressting ... maybe you upload a photo of the antenna ? wich type ?
Thanks in advance Dr Vega
Greetings Phil from Belgium
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Thanks for opening this up man!! Trying to make this thing last a bit longer, this will help. We will also have Oreo anyday now as more screen shots are being posted.
Could you show me the way to open the case, does it need heating or something else?
Opening the Mi Box case
hhai93 said:
Could you show me the way to open the case, does it need heating or something else?
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Click to collapse
Yeah, it can be tough to open. There're no screws or anything, just the clips all around the edge. I started with a sharp knife to open a crack and then slid in a credit card and ran that around the edge to release the clips. One of those plastic thingies to open cell phones works even better than a credit card.
dr_vega said:
Yeah, it can be tough to open. There're no screws or anything, just the clips all around the edge. I started with a sharp knife to open a crack and then slid in a credit card and ran that around the edge to release the clips. One of those plastic thingies to open cell phones works even better than a credit card.
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Click to collapse
Link the the antenna that you've bought please? I searched on ebay but there are many kinds of ipex connector
hhai93 said:
Link the the antenna that you've bought please? I searched on ebay but there are many kinds of ipex connector
Click to expand...
Click to collapse
Something like this should work.
https://www.ebay.com/itm/2-4G-5G-5-...862018?hash=item3d60e89bc2:g:Zc8AAOSwAXZa2AJD
dr_vega said:
Something like this should work.
https://www.ebay.com/itm/2-4G-5G-5-...862018?hash=item3d60e89bc2:g:Zc8AAOSwAXZa2AJD
Click to expand...
Click to collapse
Thank you! Just bought one, will be arrived at the end of May :fingers-crossed:
dr_vega said:
I have two Mi Boxes. Both have lousy WiFi reception. I finally decided to open one up and see if I could re-position the antenna or replace it. To my surprise, there was no antenna. I opened my other Mi Box and it didn't have an antenna either. There is a little plug for the antenna, but the antenna itself is missing.
The antenna plug is the same one found in most laptops and WiFi cards, variously called an IPX, IPEX, or U.FL plug. You can buy antennas with this plug on ebay or Amazon for about $2. They come as little flags you can stick down or little pcb boards which can have 5dbi or more gain.
I got a couple of 8dbi gain pcb antennas. The can be positioned inside the Mi Box case, but I drilled a small hole and ran them outside where they are clear of the electronics and big steel heatsink and can be aimed at the router. No soldering, just open the Mi Box, take out the four screws that hold the motherboard. Slowly pull off the motherboard which is stuck to the heatsink, and then plug in the antenna. Simple.
My WiFi download speed has almost tripled from less than 10mbs to almost 30mbs. I get 20mbs even through my VPN. I now can stream 1080 HD movies on Netflix without stuttering or buffering.
Spend $2 and 15 minutes work and you won't hate your Mi Box anymore.
Click to expand...
Click to collapse
Hi.
I have two MiBox and the connector is not the standard that is used for antennas. It is a Hirose MS-156C, usually used as a test point, so it is not possible to connect antennas with an IPEX connector.
Can you detail how you did it?
Thank you.
diruix said:
Hi.
I have two MiBox and the connector is not the standard that is used for antennas. It is a Hirose MS-156C, usually used as a test point, so it is not possible to connect antennas with an IPEX connector.
Can you detail how you did it?
Thank you.
Click to expand...
Click to collapse
That may be true, but IPEX worked for me. I bought a couple of the antennas in the picture. One was hard to press onto the connector and I used a needle nose pliers to apply pressure. The other one snapped on with just fingers.
diruix said:
Hi.
I have two MiBox and the connector is not the standard that is used for antennas. It is a Hirose MS-156C, usually used as a test point, so it is not possible to connect antennas with an IPEX connector.
Can you detail how you did it?
Thank you.
Click to expand...
Click to collapse
I confirm that the Ipex connector is compatible.
I tried to insert the antenna into the connector for 5 minutes pressing it with my fingers, but then I decided to use a screwdriver handle for this, I pushed harder, and I was able to connect the antenna.
Toliyn said:
I confirm that the Ipex connector is compatible.
I tried to insert the antenna into the connector for 5 minutes pressing it with my fingers, but then I decided to use a screwdriver handle for this, I pushed harder, and I was able to connect the antenna.
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The most important question is "After you forced the connection, did you see a performance increase?" Hopefully, something more than placebo...
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Mr.BungIe said:
The most important question is "After you forced the connection, did you see a performance increase?" Hopefully, something more than placebo...
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To begin with, I was unpleasantly surprised with the reception quality of the mi box.
I have a noname Chinese tv box with which there are enough problems, but none of them related with receiving a wi-fi signal.
When I turned on mi box for the first time without an external antenna connected, the device was able to connect to wi-fi and start downloading updates, but the online video playback and TV playback over ott playlist did not work. I even rebooted the mi box several times to make sure that the problem is not related with the updates.
Then I put the antenna all worked as expected.
So I think so. There is a noticeable difference when using an external antenna.
isn't there any android tool that mesure the wifi strength signal ?
If yes it would be nice to have some results before/after
but of course your feedback is very nice.
I had too issues, i fixed them by moving my wifi extender (my wifi router is at 1st floor and on the roof i have an extender to make sure that I have enought signal at both floor. but as the mibox whas having difficulties I moved the extender from one room to very close to the mibox) and since them streaming 1080p video is no more any issue.
But of course installing an antenna would be nice ... or maybe an ethernet usb hub ....
Indeed I may start looking at 4k movies end of the year, and plan to use the mibox (hoping that it will have enougth power)
Did anyone ever confirm if this is an antenna port or not
I just tested this out myself using the same aerial linked earlier, and I found it made no difference to signal strength or throughput. This was determined using the IP tools app and some file transfers.
In fact even though the connector seemed to be a good fit, I found that the middle pin wasn't actually making any contact. I verified this using one of the solder pads next to the connector which has a direct connection to the middle pin socket on the PCB.
I figured this may be why I saw no difference in signal so I cut the plug off the aerial and soldered the wires directly to the mibox and made sure the connections were good, and guess what - still no difference.
As I don't have anything to probe that connector with to see exactly what if anything is coming out I can't verify what it is supposed to do. But I wouldn't waste your time trying to connect an aerial to it.
Lemonato said:
I just tested this out myself using the same aerial linked earlier, and I found it made no difference to signal strength or throughput. This was determined using the IP tools app and some file transfers.
In fact even though the connector seemed to be a good fit, I found that the middle pin wasn't actually making any contact. I verified this using one of the solder pads next to the connector which has a direct connection to the middle pin socket on the PCB.
I figured this may be why I saw no difference in signal so I cut the plug off the aerial and soldered the wires directly to the mibox and made sure the connections were good, and guess what - still no difference.
As I don't have anything to probe that connector with to see exactly what if anything is coming out I can't verify what it is supposed to do. But I wouldn't waste your time trying to connect an aerial to it.
Click to expand...
Click to collapse
I did it too and "Lemonato" is right, there is no change on the wifi reception.
** sorry... don't know why the pics is not showing
anyone tried using this mod?
https://youtu.be/Nk-nj_BwoBE?t=5m30s

Reviving a wrecked motherboard. Schematics or capacitance/resistance measurement

Hello.
I'm looking for poco motherboard schematics or someone able to figure out what one smd compontent that I'm missing is:
View attachment 4866007
Story: a friend of mine smashed his screen and somehow, attempting to replace it, he tore off the mhf4/ipex coaxial cable connector on the motherboard, damaged the one on the bottom board with the charging port and broke the cable itself. I'm not sure how.
I already found and ordered the replacement parts but after cleaning the area on the motherboard where the old port used to be I found that he must have also blown off one of the 0201/0402 capacitors/resistors next to that antenna port.
The one that remained right next to it looks pretty much the same, so I could take that one off, measure it, and order a strip of those but I'm afraid to break something if it's actually a mismatch.
I searched a couple places for the schematics because in the past I had luck finding a pretty long and detailed .pdf with schematics for LG G4 H815 which helped in a similar situation. No luck this time, though.
Here are some pictures of what I'm working with at the moment:
View attachment 4866019
View attachment 4866015
Yo igual estoy en busca de schematic del poco ojala alguien pueda ayudarnos
any update on this topic, i am also thinking to reballing my logic board.
Hi all ,anyone have a diagram of the board ? I also have some bad experience with missing one part from the board near LCD connector . which is causing it's dark and no reaction :/
By the way is there some option to make a backup from Poco ? Unfortunately I don't have USB debbuger on :/
Any advice on this ?
Here is a picture of the board with missing part [IMG="https://pasteboard.co/IYtC8mD.jpg"]
While swapping boards, buttons etc from one frame to another i too ripped the mhf4 coaxial connector from the board. I believe that this is a common problem with this board. I ordered replacement connectors from china to properly solder a new one in place.
It maybe a test point......

Brick t95max

Hello! I have a t95z max and wanting to update the firm it has done nothing and only you turn on the light, I have it disassembled and I have seen that some pins must be connected. Do you know what they are? And then what steps to follow. Thanks!

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