Hi,
I recently bought a Blackberry Priv whose touch wasn't working and it had a black spot with a vertical and horizontal red and green line lit up ...
I wanted to access the phone through a OTG, i was able to briefly get the mouse cursor, but turned out the OTG had a loose contact, and the cursor wouldn't show up anymore, so i ripped my OTG cable and set out to rebuild it as a DIY project ... after much trial and error i think i was able to successfully build one.
I connected my DIY OTG and the cursor was back on the screen, however when i tried to operate it on the screen it left a trail of pixels when swiped on the screen ... scared thinking i may have damaged the screen i immediately rebooted the phone ... on reboot the trial of pixels weren't there anymore ... THIS WAS PROBABLY MY WARNING ... HAD I HEEDED ... i wouldn't be here writing this thread ... but i guess whats meant to be will happen anyways.
The mistake is that i wanted to check the voltage on the OTG cable when it was connected to the device ... i took a multimeter and touched the Ground and Vcc points on the OTG USB side to get a voltage reading ... poof the PRIV went DAAAAAAAARK ... aka ... DEAD ???
i don't know ...
Is that the end of my device ?
is there any safeguard build in android phones at the micro USB charging port end, something like a fuse(an IC, transistor, some component that will bear the brunt of a faulty charging wire/data cable) that will protect the sensitive and critical parts of the device ?
If i have to proceed the hard way ... is there a circuit diagram available for Blackberry Priv so that i can track back the components which might have been fried as a result of the STUNT (of touching Vcc & GND on the OTG cable) i pulled ?
:crying::crying::crying:
Related
Hi,
I currently repair XDA Exec's for a client of mine who use them for their delivery drivers. They are constantly breaking the screens which are easy to fix, but more often than not they smash off the usb connector and leave it rattling around inside. This is not usually a big problem to fix unless the pads that the 5 pins are soldered to have been ripped off the board. I have found that even if I successfully replace the connector with a new one and solder the two outside pins (which are the gnd and 5v pins) the battery will not charge. The puzzling thing is, if I remove the battery, the red led comes on, presumably indicating power to the device. As soon as I connect the battery the led goes out and the unit boots up only to reveal that it is not charging. So I'm presuming two things:
1. There is some other electronic component damage in the unit caused when the connector broke (due to it being on the end of the charger cable at the time, if this is the case I will scrap the unit)
2. There is some feedback from the battery that the charger needs to continue with it's output and because I didn't reconnect the data pins it won't charge.
Does anyone know how the charging circuit works and what pin / connections are required for charging. I guess the same principle will apply to many PDA's & mobile phones.
Thanks
Rick
http://wiki.xda-developers.com/index.php?pagename=HTC Universal Service Manual
http://pinouts.ru/Slots/USB_pinout.shtml
mini usb is a standart anyway
.Lemon
Hi,
Thanks for your reply, call me a lemon but what utility do I need to unpack a .lemon file ?
Rick
Lemon Head
Forget that last post ok...
I have here an rw6815 the usb connector is completly off.
But the Rest is complete intact.
So i repair it as i can.
I solder the connector by the 4 sideholders again.
And i fix the Power connectors.
mean USB5Volt and Ground.
The only thing that i now need to fix are the USB Signals Data+ and Data-.
Someone an idea to find the signals in the near of the connector ?
I dont can test becouse there is no rest of the line.
And HP makes good work in the circuit board i don´t can follow the lines by holding a lamp so it shines through
And heres no XRaytub laying around but i think si sold wish me one by Santa at next Christmas
Hello,
recently I spilled some water on the back of the phone. somehow the USB socket got the worst of it and stopped functioning correctly (only charging using a specific charger worked, no PC connection).
I bought a replacment USB socket from ebay: http://www.ebay.com/itm/121421147473?_trksid=p2059210.m2749.l2649
yesterday I followed the video guides to open the nexus, and replaced the usb socket.
now, after closing it, a gap appears in the housing in such way, that socket is not perfectly alligned, so when I connect the micro usb cable, it doesn't go straight in, I have to give it a certain angle.
it looks like this:
from inside the phone, the usb socket sits perfectly good. I just can't get the clips in the housing in the usb socket area to close.
anyone knows how to deal with this?
also, since replacing my usb socket (the usb socket has the LED on it too), the LED configuration is not the same.
what happens is the wrong color is flashing. I tried "Light Flow" and "LED Color Tester".
for example, I choose Yellow, and Magenta is flashing.
what going on?
thanks!
The same is happening to me. I replaced the usb flex (bought from ebay) a couple of weeks ago and the LED only shows magenta, even when I choose a different color. :crying:
I have all the colors available, not only Magenta.
the problem is the written color is not the same as the color that actually flashes..
anyone?
I have the same issue. I seem to have all the colors but when I choose red it's blue and blue it's red and so on. I contacted the seller I bought it from and they said it was a problem with the main board and to look there. I am at a loss as to what to do next. I was thinking about taking it all apart and cleaning all the boards with alcohol to see if that does anything.
I was given the phone non working and there seemed to be water damage on that board. I replaced the battery and I have to order the volume buttons for a third time because the first set never showed and the second time I got 20 screen protectors for a galaxy tab.
Hello everyone,
Currently i have a problem with my samsung tab A 8.0. Days ago i accidentally dropped my tab while it was being charged, resulting in red Cross with lightning icon while i tried to plug it on anything, and suddenly all of my usb otg were not detected and it was not detected on my pc...even usb debugging was not detected too...i had opened its case and checked the continuity of its micro usb port and it still seemed ok...now i have no idea about how to solve this, do you know what to do if something like this happens?? I suspect its pcb track is broken so maybe i will need a new motherboard again...
Hello, anyone?
How are you checking continuity? You would need to check it between the end of the USB cable and the solder points behind the micro USB pins. No point in testing to the actual pins.
The pins that solder to the board are extremely small and difficult to resolder, some sort of magnification is really required.
The way I do it is by using a solid conductor wire wrapped around the end of a decent soldering iron. Even then it's a difficult task and requires a steady hand.
hey.
i have oneplus 5 its rooted and twrp installed
i erased syetem
now i can't install any system
my pc doesn't recognize it
i enterd Qualcomm mod but it doesnt recognize it
i tried to plug a usb drive it doesnt read it
i replaced the connector and usb flex it still doesn't read it
please help me
Is there any way to copy system to twrp without usb ???
thank you
hamzah93 said:
hey.
i have oneplus 5 its rooted and twrp installed
i erased syetem
now i can't install any system
my pc doesn't recognize it
i enterd Qualcomm mod but it doesnt recognize it
i tried to plug a usb drive it doesnt read it
i replaced the connector and usb flex it still doesn't read it
please help me
thank you
Click to expand...
Click to collapse
try with both side (turn cabel)
try to oush it in hard know it sounds stupid
i know it sounds stupid but i have 1 o+5 and i changed also everything allready and tryd bunch of cabels/chargers (all oem) and same **** , charge works only in 1 position too, dashcharge is just luck sometimes works sometimes not
something dies on the mainboard on that circuit
after flexchange now contactfail but still only 1 side active even that the phone recognize connection
I changed the usb flex and connector on mainboard
It charge but no data transfer
help
Help
Help
Might be hardware. The USB board is not soldered but connected to the manboard. Open the case and fixate. HTH
Help
does the dashcharge take some wiggling to activate? @hamzah93 @KaszasM it basically means there is lots of lint in the USB-C port. USB C is known for that. Use toothpick with the sharp edge to rub inside the USB-C port to remove the lint. keep going at it for sometime as the lint is really stubborn. i had to use a safety pin and rub constantly for 2-3 minutes to get the lint out. however using metal is not suggested until you know what you're doing.
Cheers
nikk95 said:
does the dashcharge take some wiggling to activate? @[email protected] it basically means there is lots of lint in the USB-C port. USB C is known for that. Use toothpick with the sharp edge to rub inside the USB-C port to remove the lint. keep going at it for sometime as the lint is really stubborn. i had to use a safety pin and rub constantly for 2-3 minutes to get the lint out. however using metal is not suggested until you know what you're doing.
Cheers
Click to expand...
Click to collapse
most of the times its just the connector , i changed a few already ,
maybe he didn't placed well by the change or it's already **** product.
you must push all the way down once i even needed to polish the edge of the usb too, that it matches into the backcover.
in my case as i made from my phone in a hot moment a 1 + "fold" a needed to change beside the battery display backcover, even the smd connector on the board .
but all if them is still fine even the last wich i mentioned in the first post above , now with the new smd ?
take your phone to pieces and free the usb port and try your charger / even better any usb otg.
if it works the trouble is 100% that u must push "down" in the backcover let the red isolation ring dissaper in the cover , if not worked with "free" usbport order 1 more
I changed the connector many times
I ordered one more flex cable and dashboard
I will chang it will replay
Thank u
i had the same issue. i just cleaned the charging port with some water ( i took the risk as it is splash proof) and a cloth and its even dash charging now. But do it at your own risk. i do this often when the problem occurs again.