Hello,
So I have the following Samsung Multimedia Dock, which was working fine since a year or more. It was used pretty much regularly with Galaxy SIV (either with stock or extended battery ). I guess after prolong usage and atmosphere condition the solder point on the micro USB connector internally got dry and got detached. Hence it stopped working.
Hence when opening it to have a look inside, I lost the sequence of 8 wires connected to the micro USB connector on both sides (4 on each side). The pins on the micro USB connector are marked numerically 1-8 , however I cannot see the same number on the main PCB, so I am at a loss to understand how to get them solded again , in which order and sequence.
It is I guess a 11 pin micro USB connector because the dock had HDMI, Audio Out, and USB in (OTG) connections and power charging all at the same time.
Case cracked open and the main PCB and micro USB connector are apart.
Close up of the PCB
PCB and microUSB
MicroUSB connector call it side A (4 small pin out number from 1-4)
MicroUSB connector call it side B (4 small pin out number from 5-8) (I was able to see which wires were connected on this side so I marked this side with a blue marker and did the same with the 4 wires loosely held on this side after detachment)
PCB wires close up. Total eight wires. Starting from right the order is Black->Yellow->Green->Red->Yellow->Black->Red->Green, each of the wire needs to go to a pin 1-8 on the micro USB connector.
I know there are no published schematics for this PCB and 11 pin Samsung connector, however I am relying on the electronic expertise of the gurus around to help and guide me.
Thanks for your guidance.
Related
after 4 months of use I'm already getting a loose micro usb port... time to break out the needle nose pliers
anyone else got a loose port ?
also same thing on my wd passport, they need to make these connectors a little better like a socket for a wrech
And how do you make it tight again?
You don't. It means you have broken micro solder joints and it is only a matter of time before the port fails completely.
Well that sucks
the actual female connector isn't loose... what the deal is when I put the micro usb in my phone it just falls out easy after I plug it in and then go to move the phone around...
what i had to to was crimp the female part on the phone just a tiny bit so that the usb sticks without falling out
same for my portable pass port ... I gues after awhile of stciking and pulling it gets loose
Need help in fixing my samsung galaxy tab 2 7.0 charging/usb cable
Here's my situation,
1. I own original cable and soon tossed it away because the cable has got snapped wires and I find it difficult to solder to the pcb board.
2. I bought another cable, but again, it's having charging issues after 4 months or usage. I'm started to think that these type of cable is easily broken. So I wanted to fix the cable myself by open it up and resoldering the snapped wires in order to save money. The 2nd cable I bought has got no pcb board attached inside. Just pins and solderings.
For now, I just want to be able to charge using the original charger and be able to transfer data files using my pc. So I need help to someone to tell me which wire (color) is attached to which pins. 4 different colors, Black, Red, White and Green. Thanks before.
Here's the look of the 2nd cable when I open it up (removed the remaining snapped wires)
Hi all,
I have a Philips AS111 docking station/bluetooth speaker/charger. Worked perfectly for my SGS2, however, since I bought a new phone (Sony Xperia Z1 Compact) I'm experiencing some problems.
I bought an micro usb to magnetic connector adapter to be able to connect my phone to the dock without having to open the flaps all the time. I took it apart and it basicly splits the first and fifth pin of the micro USB connector to the pins in the magnetic connector. Unfortunately I may not link to external images...
Unfortunately, my phone does not charge when using the adapter in combination with the Philips dock. It does when using the original Sony USB charger and the adapter, so the adapter is fine.
I measured the voltage on the two pins, and it's 0V. I even tried to fool the dock by putting a 1.5kOhm resistor over several lines. Only when I put a 1.5kOhm resistor between 5V and the connector housing, the dock responded by turning on Bluetooth. Voltage went crazy, flipping between 0 and 3V, but phone still doesn't charge.
I think the sollution is to fool the dock by putting a certain resistor between certain lines or by shorting certain lines. Does anyone have a clue how to fool the dock to think there is a device connected, so it opens the +5V line?
Thank you very much!
Nobody into usb connection protocols? :crying:
Finally got it working. Eventually I needed to connect two wires together inside the device. One of them being 'CLAS1' and the other was Ground. Both could be found on the connector going to the micro usb plug of the device. Unfortunately I can not post a link to the photo I made of it.
mblox said:
Finally got it working. Eventually I needed to connect two wires together inside the device. One of them being 'CLAS1' and the other was Ground. Both could be found on the connector going to the micro usb plug of the device. Unfortunately I can not post a link to the photo I made of it.
Click to expand...
Click to collapse
Hello!
I've just bought an AS111. Charges perfectly my SGS4 but it doesn't do a thing when I try connecting my SGN3 (the one with the micro-usb 3 connector) to the Philips dock. I know that the micro-usb 3 is backwards compatible but I do believe that the AS111's dock outputs too little power - or something like that, I am no expert.
I was wondering that maybe your experience could be of help to me. What do you think? If so, could you please guide me through the stuff you did to the dock? Thank you!
Hi all,
I am trying to mod my old tf300t and keyboard dock into a dex dock for my note 9. Im not worried about the tablet portion as i can get a lcd controller for the panel. However ive been soldering and desoldering for the last 3 days. I am trying to leverage the docks kb controller and add a usb connection or modify the dock port into a usb.
I have looked at the various pinouts but cannot get the keyboard working.
I dont care about audio or sd card or the extra usb port.
Any help or pointers would be great.
Here is a mockup of the pinouts i have soldered based on the pinouts i found
Ive been trying to test it on an old s7edge incase i wire something wrong. It detects a regular keyboard but when i try this nothing...if i use the wall charger i see that the dock is charging but still nothing at the dock connector. Ive been trying with a usb 2.0 cable. Connected to the d+ d- vcc ( all 3) and multiple grounds and i pinned the sense pin to ground as well.
I have also tried to open the charge cable and solder the usb to the data pins on that both with and without ground. And use a 5v plug and the original asus plug.
The dock port is basically garbage at this point so if i plan to use that i need to use the 2 20 wire connectors and map the individual wires .
I have managed to get the s7edge to detect that something is connected. However i then resoldered the pins to try more as it wasnt working. So i need to go back to the beginning to try again. I believe my issue was due to the otg aspect of the usb. Im using an adapter for the phone but i also tried to wire the connector the same way. Ill take some pictures of it later if i can get it working
So not sure if anyone is following this thread but i have made progress.
I have totally butchered the original 40 pin connector and now am tapping into the 40 individual wires that connect the main board to the connector pcb. I can get my s7edge to detect that the usb connector is attached but it keeps telling me that a high power usb device is attached and that it needs an external power source.... so today i busted out the multimeter and i believe i connected one of the usb host vcc connections to the other vcc connections so i separated this. I also believe that the s7edge has some usbotg voltage issues so im going to test it with an old macbook pro with windows to see what it picks it up as. When i get some more time i will try to trace the other wires there might be something else needed
Maybe
Nice job, I'm not particularly knowlegdable in electronics but I remember there is a battery portion in the dock? Maybe it causes some error during otg?
As times goes by your micro USB will be more and more loose to fit your Android. It will not click on the connector and the charging of the battery will not start.
This is the thing to do:
Apply a sligth pressure on the sides of the male micro USB connector, that will compress the micro USB from side to side, and it will fit your Android again.
You can do this with a set of pliers or a vise.
If you go to far just press from top to bottom until it fits.