Hi all ...
I'm new here, I'm an electronics Engineer, but I think I got to a dead end with the USB / Charger connector.
it broke 1 year ago and I bought a new connector soldered it with an SMD soldering iron.
everything worked fine, charges fine no problems.
when I wanted to synch it, it refused to connect. I changed the versions to make sure it connects but the PC keeps on saying that the USB device cannot be recognized.
I went through all the pins that I soldered and made sure nothing disconnected or shorted.
all fine but I noticed one thing ... that one of the smd components is missing.
its so small " less than 1mm "
I just need some tips to troubleshoot the problem.
which pins are for serial communication via USB?
any diagram available to help solving this problem?
I have sent it to the agency and they were un able to help ... they just replaced the connector again that it was already working.
device is : i-mate PDA2K original ROM version WM2003se.
Thanks in advance
visit blueangel section of wiki.xda-developers.com. there should be a pin out of its connector.
if you don't care about syncing and only want backup, a simpler solution will be to use SpbBackup or Sprite Backup program that runs on your phone.
good luck
Actually I need the synch facility to upgrade the ROM. I have been using cab files since ages with this pda so synch. is not for downloading appz.
I have seen the pin config. for the car handsfree connector. I think it will help.
still I need some help with the internal schematics the USB +/- Data pins internal schematic.
Thanks
hmmmmmm........ive bin googling the data connection may be this may help.... http://geektechnique.org/images/usb-connector.jpg
hirsty said:
hmmmmmm........ive bin googling the data connection may be this may help.... http://geektechnique.org/images/usb-connector.jpg
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Thanks for your effeorts, but I was looking for the PDA pins, more percisly is the main board schematic at the pins cuz I think there is a real mess there and I need to trace every pin to fix this problem
Related
Hi,
need to know what type of mini USB is on the circuit ? how many pins?
thanks
All mini USB connectors should be created equal, usb (including usb mini) its what is called an idustry standard, thay have 5 pins total, same shape and size always, I wouldn't even suspect that some connector maker could took off any of the pins out, what surely should be, is that the connector must be a PCB mounting type, it would be a better idea to open the PDA, take off the connector and bring it with you when you buy the new one.
One easy solution -that I think someone in the forum has already mentioned- would be to use another device's mini usb conector (such as a broken bluetooth headset or a memory multicard reader).
hopefully tommorow i'll be able 2 post photo
Hi. I have the following problem: the miniUSB jack, the pins are bent. I can charge the cellphone, but activesync does not work, windows recognizes the device as an unknown device. I do not know how I see the the pins are properly bent. Is there a trick? I hope you can help me. Pascal
Same Problem, USB Jack pins for charging bent
I got a used Prophet from a customer wich doesnt charge
or sync's to Active Sync.
I recognized the two bent Pins and the task is now:
does any one know where to get a new USB jack?
I will solder it in my selfe but i need the partnumber of these
usb jack or i have to finde an identical one. (maybe I disassamble
one of the dead Prophet's in my collection ;(...) but getting this SMD
usb jack off the Mainbord without any damage is a bit difficult,
so i prefere a new part for these repair.
Does someone know where to get a
partlist / Boardlayout with partnames on it.
You need this
just correct it with the stylus .......
Insert the stylus or a toothpick to the port and straighten the 5th pin
cheers!!!
Aju
i hav problm with ma O2 XDA i purchase frm someone else who upgrade it to wm 5 to wm 6.5 wwe tomal....
when i connet to it with pc no conntection shows... when i open its body, usb connecter is not working properly all connections are dammaged except charging..... tell me how i can re coonect its all connection with usb jack plzzzzzzz help me :'(
if you mean the charger usb ports are desoldered/unconnected to the motherboard?
you're prettymuch SOL. you can use bluetooth to sync, however. soldering pins that small is damnnear impossible.
charging connector is fine but the other connectors are dameged
if any other solution how to sold them
you could ask some other members for help,
As i have seen in the past people sendin off there Unis for repair...
I had been somewhat unlucky and while charging my beloved FLO something went puf (literally). After that I don't have any USB connectivity. Charging my N7 works (very slowly), but no USB OTG or USB ADB. OK Fine and dandy if I wouldn't be total idiot and wipe system while trying to install new ROM before transferring ROM image to internal storage.
Now I have FLO paper clip able to go to TWRP but can't install nothing. As far I understand there's no way to enable wifi in TWRP.
Any ideas what would needed to be replaced to make my FLO work again so I can put some ROM on it and make it work again.
I'm not sure if USB daughter board would suffice and solve my problem. Any suggestions?
jxl69 said:
I had been somewhat unlucky and while charging my beloved FLO something went puf (literally). After that I don't have any USB connectivity. Charging my N7 works (very slowly), but no USB OTG or USB ADB.
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Either the USB port developed "dry joints" or the wide silver cable (LCM) needs to be re-seated on both connectors.
Disconnect the battery before fixing LCM cable. Here is advice on USB port repair.
Replacing the daughterboard PCB should be the last resort because it is unlikely that the touch function will work 100%. It would work if we had access to the touch calibration software - the problems are described here https://forum.xda-developers.com/ne...rivers-to-calibrate-touch-screen-usb-t3334898
k23m said:
Either the USB port developed "dry joints" or the wide silver cable (LCM) needs to be re-seated on both connectors.
Disconnect the battery before fixing LCM cable. Here is advice on USB port repair.
Replacing the daughterboard PCB should be the last resort because it is unlikely that the touch function will work 100%. It would work if we had access to the touch calibration software - the problems are described here https://forum.xda-developers.com/ne...rivers-to-calibrate-touch-screen-usb-t3334898
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I doubt re-seating would help or cleaning USB port, since it was something electrical happening with that *puf*. If my memory serves me right there was a smell of burnt electronics. I doubt that some shortage disconnected any cables.
jxl69 said:
I doubt re-seating would help or cleaning USB port, since it was something electrical happening with that *puf*. If my memory serves me right there was a smell of burnt electronics. I doubt that some shortage disconnected any cables.
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Sounds like you need a new charging port and board. Easy to fit but difficult to get hold of one. Maybe purchase a broken Flo on eBay and extract the charging port board
dave457 said:
Sounds like you need a new charging port and board. Easy to fit but difficult to get hold of one. Maybe purchase a broken Flo on eBay and extract the charging port board
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Even tho charging works? The only problem is data part of USB connection. USB OTG will not work neither will it connect to a PC for file transfer/adb. But if connected to PC or plug device charges. I believe it will not charge past 80 or 90%.
jxl69 said:
Even tho charging works? .
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Yes
Hi,
After seeing many users struggle with this chip... GL852 is better but some still has some issues randomly with it.
I was wondering why not take the only USB directly from the PX3/5/6 board to external USB connector and then manage all USB device externally with a good quality powered USB hub?
This should work in theory, but you will lose internal WIFI (can be easily corrected with a WIFI dongle)
What do you think guys?
Regards,
Laurent
Not struggling here . Also, wifi is via separate USB connection according to MTCD schematic and at least my unit is like this.
My understanding is that some units came with defective USB hub chips, replacing them solves an issue where they slow initialize when cold.
marchnz said:
Not struggling here . Also, wifi is via separate USB connection according to MTCD schematic and at least my unit is like this.
My understanding is that some units came with defective USB hub chips, replacing them solves an issue where they slow initialize when cold.
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Yes I just saw in the schematic and tested the two last pins 74/75 are in fact connected directly to the wifi board (RTL8188ETV).
Since I'm already board opened... I will remove the chip I'm already using a special hub in the car for Android Auto that can deliver 2.1 amp while using USB data.
Just a quick follow-up... I double checked all the traces from the GL850 3 ports goes at the back of the unit one very important port (USB-DM4,USB-DP4) goes at the front LCD for touch input!
TL;DR : Don't try to bypass the GL850/852 chip or you will lose touch input!