Hi guys,
I recently dropped my phone on concrete, resulting in a nasty crack across the screen. Last night I received the new LCD/Digitizer and went ahead and replaced the screen (I opted to replace the LCD as well due to the copious amounts of glue used between the two parts). After many curse words were shared, I put it back together again and everything works perfectly... except Wifi.
I was wondering if anyone has had a similar issue, and where I should start looking to fix this? I took the cover off again to check both white (wifi?) cable and black (bluetooth?) cables, and both were connected as they should be.
Any help would be very much appreciated!
Tim
Go back through and check every wire and hook up. That's all you can do.
- hit my thanks button if i helped you -
hukel56 said:
Go back through and check every wire and hook up. That's all you can do.
- hit my thanks button if i helped you -
Click to expand...
Click to collapse
Yeah, thanks for the reply. I went through it on Saturday very carefully looking for any wire or contact that was loose and unfortunately everything was correctly attached. I did notice that the bluetooth and wifi wire plugs on the lower board were *very* close to each other, so they may well have touched and caused a short. After checking everything over and reassembling the phone, wifi still didn't work I also checked bluetooth and that won't work either, so perhaps my suspicions about the wires contacting is correct.
Note to anyone else doing a repair on this phone: Be very careful that the wifi and bluetooth plugs don't touch each other. It's very easy for them to rotate around in their socket and contact each other. I'm not sure if this caused them to fail in my phone, but it could certainly be the reason why both no longer work.
Cheers
Did you seperate the wires...and did that work.
hukel56 said:
Did you seperate the wires...and did that work.
Click to expand...
Click to collapse
Yep, I separated the wires and still no luck :/
I also removed the wires just to see if it would at least turn allow me to turn on the wifi, but all it says is "error" in the wifi settings and I can't turn wifi on no matter what I try.
I have exact same problem: after LCD replacement wifi fails with ERROR. Also sometimes no reaction to POWER button - no power off menu neither LCD is off/on. Don`t expect any wires or so i could accidentally damage.
Solved
After dissasembling phone again i found that flex cable has not good connection to mainboard. I pressed connectors, felt some "click", reassembled phone and after booting everything is ok:
wifi, bt, volume buttons, leds while charging operating well. Attaching picture. The connectors are located right under sim card and micro sd card slots, you have to remove full mainboard and flex cable to fix that. Cheers!
juzis28 said:
After dissasembling phone again i found that flex cable has not good connection to mainboard. I pressed connectors, felt some "click", reassembled phone and after booting everything is ok:
wifi, bt, volume buttons, leds while charging operating well. Attaching picture. The connectors are located right under sim card and micro sd card slots, you have to remove full mainboard and flex cable to fix that. Cheers!
Click to expand...
Click to collapse
That's really interesting. Thanks for the info. It's odd that the phone even functions if the flex cable might be loose. I may have a look and see if this is the problem too when I get a chance.
Yes, phone operate, but really weird behavior - some functions worked, some not, sometimes no reaction to power on button and so on. Hope this helps someone.
juzis28 said:
Yes, phone operate, but really weird behavior - some functions worked, some not, sometimes no reaction to power on button and so on. Hope this helps someone.
Click to expand...
Click to collapse
Hmm. I wonder if my issue is the same. I have experienced absolutely no odd behaviour other than wifi + bluetooth not working. Everything else works as it used to. GPS actually seems to work better haha. There are two flex cables so perhaps one of them does those two things.
TimHawker said:
Hmm. I wonder if my issue is the same. I have experienced absolutely no odd behaviour other than wifi + bluetooth not working. Everything else works as it used to. GPS actually seems to work better haha. There are two flex cables so perhaps one of them does those two things.
Click to expand...
Click to collapse
If you haven`t found any other damage: wires, pcb, then most probably your issue is related to exact flex cable. Yes, here are two contacts where flex cable connects to m/b, its clearly seen on photos i attached. My problem was both flex cables become loose...
You're a real man. I would have paid someone to fix my screen.
DIY makes you a real man? lol
- sent from a flux in space -
juzis28 said:
After dissasembling phone again i found that flex cable has not good connection to mainboard. I pressed connectors, felt some "click", reassembled phone and after booting everything is ok:
wifi, bt, volume buttons, leds while charging operating well. Attaching picture. The connectors are located right under sim card and micro sd card slots, you have to remove full mainboard and flex cable to fix that. Cheers!
Click to expand...
Click to collapse
My WiFi (and Volume Keys) stopped working after I dropped my phone.
After reading your solution I removed the SIM/SD-Cover and just by pressing from outside, the cable snapped in.
No disassembling, not even a reboot! My DHD works like on it's first day!
Thanks!
I've been searching around for a fix to the problems I've had with my Note 2.
Basically I replaced the charging port, as the phone stopped responding to USB input. Everything worked fine but the network signal was suddenly extremely poor, often dropping calls or having no data connection.
I confirmed this was a hardware problem when I inserted a thin piece of wire into the R1 external antenna port on the back of the Note 2. This gave me 2 additional bars, but isn't a great fix as the wire needs to be adjusted frequently.
I was wondering if anyone knows what the problem might be and how to fix it. It seems like it should be a cheap fix, but I'm unsure of what components could be at fault (the new charging port, the antenna cable, a radio?).
As a secondary solution, I'd consider having an external antenna folded inside the back case, but it would need to fit and be cheap. I'm not sure if the connector is the same as the ordinary flex cable (see: http://www.ebay.com.au/itm/141170293305?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649)
Assistance is greatly appreciated. I think I've narrowed the problem down so I'm hoping someone has dealt with all this before.
When taking apart my Nexus 7 (2013) LTE tablet apart, I accidentally yanked on, what seems to be, the WiFi antenna, which pulled the wire out from the metal bracket. I've been trying to find a replacement but I cannot find it anywhere online. Ive tried WiFi Antenna replacements from Nexus 5 (got them from eBay), but the wire is too short, and it doesn't seem to latch on. I've attached some photos.
Has anyone had any luck on finding WiFi antenna replacements from which I could order from?
Found this website talking about the different types of coaxial wifi antennas:
http://www.onlinewirelessplace.com/
[11/12/2014]
Using the reference website above, I am thinking I need the Hirose U.FL
Ordered from
www.gridconnect.com
[11/19/2014]
I received the cable today. Unfortunately it doesnt fit/match. There are two similar cables in tablet, so I tried transferring the working cable to the location that had the broken cable. This fixed my Wifi. I haven't seen anything go wrong by doing this. I guess that's enough for me.
Ok, I've got a old Note 3 still chugging along. The USB port was starting to get so loose I was having difficulties even with new USB cords. So I figured I'd swap out the board as it's a pretty simple swap (or so I expected). This isn't the first time I've done internal repairs, boards swaps, etc.
I replaced the old charge port board with the new one, made sure the 3G antenna cable was re-attached, and fired up the phone. All seemed fine. The connections were good and the speakerphone and mic worked (one frequent complaint of bad replacement boards). But, I was on Wifi and didn't notice until the next day that... Mobile data would drop frequently, my phone would frequently go to 4G only (something I rarely saw previously, it's usually straight into 4GLTE here in Chicago) and mobile data was very unreliable. Frequently I'd lose all bars and even if it was showing 3bars and 4G (not LTE), I wouldn't have data. I rarely do calls so I'm not sure if calls would go through.
So I opened the phone again, and checked the connections. All looked good. I used my fluke to test continuity from the ground side of the cable on the motherboard through to the pins on the USB chargeboard (where they connect to the outer back case antenna). All continuous. Resistances are all very low, even on the old board. Still messed up data and cell signal. Hmm, the lower antenna is only the 3G connection I think. Perhaps I have a bad charge board after all. I swapped the original USB board back in, but it still had the same problem.
At this point, I'm not sure what the issue is (other than I have a big problem). Is it possible the antenna embedded in the rear housing is bad or was damaged during removal? I cleaned all the connectors multiple times (first with isopropyl, then with DeoxIT Gold). I have my previous Sprint Note 3, but I don't know if the 3G antenna would be compatible (perhaps it's close enough I could use it to test). Anyone have any ideas on what I could have missed?
Thanks!
Had a problem earlier where the head unit couldn't get a GPS lock. Occasionally I need to close and re-open the satnav application to get a position, however today it just didn't work. After a few resets and it still not working I opened up the GPS Info app and it could see satellites, however it was a bit erratic. I thought it would settle down, however it didn't. I took the video of it but I can't upload it here as video's don't seem to be allowed?
Anyway it just said 'Invalid', the date, time and speed all showed 0 and the number of satellites kept flipping from 1 to 12 with varying levels of signals (23 through 43).
I had to remove the glovebox yesterday as my wife managed to rip out my USB charging socket when trying to connect her phone (AND spilt a can of Pepsi, and she wonders why I don't like her using my car...). The GPS receiver is installed above the glovebox under the dash. Its possible I damaged the cable on re-installing the glovebox but I was pretty careful.
I'll take it apart tomorrow and have a look. Is this likely the cause or could it be something else? It seems odd that it sees a lot of satellites if the GPS receiver is not connected (i.e. cable broken).
Andy
Is it an MTCD?
marchnz said:
Is it an MTCD?
Click to expand...
Click to collapse
Its a PX5 MTCD (says MTCE with MCU update). Its a GS (Xtrons) unit.
I took the head unit out this morning and tried a spare GSP antenna and it worked straight away.
I then took the glovebox out, removed the original GPS antenna, put the spare in there and re-routed the cable so it hopefully won't get crushed if I remove the glovebox again.
All working now. The GPS cable is quite flimsy. I can see on the original one where it is slightly flattened so it must have been this.
Andy