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I changed touch screen and after that loose WIFI and BT signal
maybe antenna problem
nedko76 said:
I changed touch screen and after that loose WIFI and BT signal
maybe antenna problem
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Click to collapse
wow. I have buy a second hand device and I have the same problem. For sure my screen was changed. I have open the phone from the video here:
http://pocketnow.com/hardware-1/official-htc-hd2-disassembly-assembly-training-videos-leaked
...but nothing ((
Antena it's in up-left when you watch on phone.
I am almost sure at the left side directly under the volume button .
Robert A said:
wow. I have buy a second hand device and I have the same problem. For sure my screen was changed. I have open the phone from the video here:
http://pocketnow.com/hardware-1/official-htc-hd2-disassembly-assembly-training-videos-leaked
...but nothing ((
Antena it's in up-left when you watch on phone.
Click to expand...
Click to collapse
Those videos are awesome..I see myself disassembling my HD2 after couple years
Robert A said:
Antena it's in up-left when you watch on phone.
Click to expand...
Click to collapse
It won't be in the upper portion of the phone, as this increases the strength of the radation the head is exposed to. I believe there is a law prohibiting it from being too near to the skull. Which is why all antennas in modern phones are internal and not placed by the speaker at the top of the phone.
Although this seems to not apply to GPS, Bluetooth and Wi-Fi, which is what those wires by the speaker at the top of the phone are.
Class 1 Bluetooth devices can cause exposure to radiation similar to that emitted by a cell phone if they are operated in the immediate vicinity of
the body. Bluetooth devices are designed to limit the radiation power exactly to that actually required. When the
receiving device indicates that it is a few meters away, the transmitter immediately modifies its signal strength to
suit the exact range, which reduces the total emitted radiation and signal interference (IT'IS 2005).
A study commissioned by the Swiss Federal Office of Public Health (FOPH) measured SAR for several Bluetooth
devices, including two different class 3 hands-free cell phone headsets. The headsets tested had SAR values of
0.001 and 0.003 W/kg, which is 34 and 12 times lower than the SAR of the lowest-emission cell phone currently
available (Swiss Federal Office of Public Health 2009a).
The article can be found here.
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Click to collapse
The cell antenna is the strip on the bottom below the battery door,the wifi antenna is at the top right (if looking at it with the screen up),and the gps antenna is at the top left. There is a white cable that is supposed to run from the gps antenna to the bottom side of the main board,and a black shorter antenna cable that is for wifi that plugs into the top part of the board. I have a pretty strong feeling that the person that fixed your phones (whether that was you or someone else) probably didn't plug that cable in the right way.
<EDIT> By the way,if either of you want one that works the right way/for parts,I have one for sale that the volume buttons don't work and the lcd is cracked,but everything works other than the volume buttons.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270637114813&ssPageName=STRK:MESELX:IT </edit>
Anyone ever have any antenna issues without taking apart the phone? my phone just developed issues with dropping wifi unless im close to the router, im guessing an antenna cable is loose. and for those who have fixed the antenna issue, how hard was it?
according to the HD2 manual, the antenna is the bottom 1/5 of the phone
WiFi antenna in HD2
Robert A said:
wow. I have buy a second hand device and I have the same problem. For sure my screen was changed. I have open the phone from the video here:
http://pocketnow.com/hardware-1/official-htc-hd2-disassembly-assembly-training-videos-leaked
...but nothing ((
Antena it's in up-left when you watch on phone.
Click to expand...
Click to collapse
The WiFi antenna is located at the right of the camera watching the camera in the back panel. If you watch this video, http://pockethacks.com/category/service-manuals/, you will see that the Bluetooth/Wireless atennas are located together and connected to the main board with a coaxial cable.
msnuser111 said:
The cell antenna is the strip on the bottom below the battery door,the wifi antenna is at the top right (if looking at it with the screen up),and the gps antenna is at the top left. There is a white cable that is supposed to run from the gps antenna to the bottom side of the main board,and a black shorter antenna cable that is for wifi that plugs into the top part of the board. I have a pretty strong feeling that the person that fixed your phones (whether that was you or someone else) probably didn't plug that cable in the right way.
<EDIT> By the way,if either of you want one that works the right way/for parts,I have one for sale that the volume buttons don't work and the lcd is cracked,but everything works other than the volume buttons.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270637114813&ssPageName=STRK:MESELX:IT </edit>
Click to expand...
Click to collapse
What this guy said +1
I find myself in a similar situation to nedko76. I had to take my phone apart but just the case away from the screen circuit boards etc because the plastic led shield had come lose and was touching the vibration device causing a strange noise.
So i managed to get the phone apart (which was not as easy as shown in the video) i didn't touch the screen part at all, put it back together again and switched it on. To my relief it switched on, all looked good, the noise had gone from the vibrator however the only thing that is not working is the wifi.
I'm hoping someone has resolved a similar issue without the need to reopen the phone again as i can't help but think i will do this and see nothing wrong. Which would either mean i've somehow damaged the wifi circuit board or something else.
I use wifi alot and will miss it loads if i can't find a way to fix it.
As already mentioned, WiFi antenna seems to be feeded by a tiny cable, it is probably using some tiny coaxial connectors, those are usually relatively easy to accidentally disconnect. I would start from looking at those and making sure they are "wedged in" properly.
I have taken the phone back apart and checked all wires are pushed in and everything is connected from what i can see. But still nothing.
Wifi switches on but just stays at scanning. Now does that mean that the wifi is working but the antenna is the issue.
I'm just wondering if its a software issue somehow. As i never touched any part of the board, or antenna etc whilst it was apart and like i've said i couldnt see anything out of place or loose.
Dude,
There are 2 brass clips on the top right of the motherboard which attach to the rear case antenna. Make sure these brass clips are correctly functioning and working. There are 2 for the gps at top left big ones from memory then there are 2 at bottom for radio antenna and two at top right for wifi.
Make sure these are all ok...
If you can post a detailed photo(s) I can give you more assistance. Zoom in the motherboard and the clips if you do provide pictures.
Good luck
Yeah i saw these when i took the case back off yesterday, i looked at all them to see if there were any differances, any broken off etc but they all looked fine. I did lift the ones for the wifi and bluetooth just a little bit to make sure when the case went back on they would be in contact. But still no luck.
I find it difficult to believe that just taking the case off pushing a little bit flashlight plastic back into place would really stop the wifi/bluetooth from working.
I'll have to keep searching the web to see if anyone has resolved the same issue and what it actually is. It would be interesting to see if people take their cases off then just put them back on again if they have the same issue or whether somehow i've messed something up.
Dude, show me a pic of motherboard to see if all your connections coaxial are ok.
Otherwise, your hardware maybe fubar. I have opened mine several times and no probs.
Right I took my phone apart again this morning to double check everything. I noticed the cable attached at the bottom as mentioned in previous post. It lifted off a bit too easily, so I positioned it correctly and pushed it back down, my WiFi now works. So that was my issue.
So my advice would be if both your Bluetooth and WiFi do not work, it is more than likely the cable is lose. (more likely if your phone has been a part obviously)
Thanks for everyone's help and advice on here. no fubar hardware here thankfully
Common problem after service?
nedko76 said:
I changed touch screen and after that loose WIFI and BT signal
maybe antenna problem
Click to expand...
Click to collapse
I'm also experiencing this after changing a smashed screen... The accident it self did hardly cause this since I used the phone with full performance for about a week between dropping it on the ground and draging my sorry ass to the retailer. Since I don't intend to open this stuff up I guess I'll have to go back there. I will refer to this site if they try to indicate that their sloppy disassembling isn't the reason... Please, feel free to boost me with more cases like this...
I have replaced the screen myself and have the same problem with Wi-Fi only.
I dont know why Wi-Fi run only without the battery cover.
I' m trying to torque chassis for looking if it is a mechanical issue but it seem not.
I've tried also to connect the two little contact they are at the same level with the bottom of the battery looking the phone from its back without the cover.
I've not found yet any relevancy with the presence or not of the back cover related with Wi-Fi transmission.
I remember that when the phone was disassembled, I have slighty lifted with my finger the bigger one of the two lamellar contact of Wi-Fi antenna; anyone know if this could be the cause? Must to touch these contacts chassis or not ?
nothing else ?
hi
My HD2 having very poor BT signals
Everything works just great but the distance is max 1 ft, if i keep distance more than 1 ft signals get broken I tried diff BT devices and am sure the fault is in HD2.
Guys any ideas?????
thnks
Witch Radio and ROM version do you have/use?
hi there,
I am using energy's latest rom. I have already tried diff. radios.
one thing i forgot to mention that i did open back area to change speaker of my HD2 but i am sure there is nothing damaged or changed any parts.
any ideas????
iirc, there is a cable insde that connects the bluetooth module to the antenna, maybe you unplugged/damaged it?
Even i had the same problem, I did get the BT antenna replaced, and what i understand is some of the modlues came with Poor BT antenna. This was the explaination given to me by the service guy.
wergor said:
iirc, there is a cable insde that connects the bluetooth module to the antenna, maybe you unplugged/damaged it?
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Click to collapse
OMG i am to check the back and let u kno
guys i fixed it
the cable from antenna was unplugged i am going to upload pictures soon when i am ready
thanx
If you see the pictures of back panel it has got 3 antenna top right corner near the ringer is for GPS, top left corner is for BT & WIFI and in the bottom for GSM reception antennas
sorry for the poor picture quality
kslakhani said:
guys i fixed it
the cable from antenna was unplugged i am going to upload pictures soon when i am ready
thanx
If you see the pictures of back panel it has got 3 antenna top right corner near the ringer is for GPS, top left corner is for BT & WIFI and in the bottom for GSM reception antennas
sorry for the poor picture quality
Click to expand...
Click to collapse
Photos are not necessary because every antenna is labeled.
I had the same problem with my bluetooth after opening my HD2 to repair sth...
I reopened it and lifted the contacts of the antennas but it won't work...
What cable was unplegged, because in my case every cable is plugged correctly :/ !
Solution
Hey guys!
I managed it to solve this problem, at first it wasn't really clear for me which cable you mean, but then i looked around and i found the cable on the mainboard was loosen! I've attached some pictures, where you can see the clip on the mainboard!
Thanx!
PS:
Location of the clip > At the third picture (the darker one) at the upper left edge of the print plate (green one) there is a small silver clip on the mainboard near the whole for one those 4 screws.
Silberpfeil3110 said:
Hey guys!
I managed it to solve this problem, at first it wasn't really clear for me which cable you mean, but then i looked around and i found the cable on the mainboard was loosen! I've attached some pictures, where you can see the clip on the mainboard!
Thanx!
PS:
Location of the clip > At the third picture (the darker one) at the upper left edge of the print plate (green one) there is a small silver clip on the mainboard near the whole for one those 4 screws.
Click to expand...
Click to collapse
hi
great u managed it
The same here: I was able to fix it, too. The cable simply was not plugged in.
Thanks for the pictures and the hints!!
I just recently sent my phone to the shop so they can fix the digitizer, it broke on my pocket when I sat on it. After that the signal strength has gone drastically low, can this be a hardware malfunction or VPN issue? Thanks for the help
have you tried to update radio? its a good place to start. what are your system specs? what rom are you running. there no such thing as to much info when asking questions my friend.
I did not understand if your problem has appeared after the replacement of the touch ..
still looks like a hardware problem, the black coaxial cable that goes inside the black volume button may be loose (almost certainly) his fixation on a snap ring of 1.5 mm.
regards
I think you have broken (or lost connection) one of the four connectors which rely on the casing (which is the antenna on the plastic case)... see picture http://img862.imageshack.us/img862/9258/htchd2disassembled5.png
Just looking for some info that I Can't find doing searches.
My note 3 was thrown at a wall. The main impact was the upper right corner, near the front facing camera. The frame was bent and the front screen was shattered entirely. The screen did not even light up at all when turned on.
I've had the front screen / case replaced. The phone now looks as good as new but the following two things do not work:
- front camera (it works but its blurred. Repair guy said it was shattered)
- GPS (cannot get a lock at all, not even sure if its being detected or what)
I have a new front camera coming in the mail (less than $10), but where is the GPS? I know it's located around the impact area, but what are my options / what could it be? The repair shop said the board looks ok, but I only found out the GPS wasn't working when I was trying to use navigation on the way home.
Can I replace the GPS antenna? If so what is the part called as I cannot find it anywhere.
I am hoping that the repair shop didn't seat a ribbon cable or something but I know this is probably unlikely and that the GPS is broke. If this is the case, what can I do to fix it?
Thanks,
Hardware Issues after replacing battery, USB/Audio connectors & main board
Need some help, and figured you guys would be the right people to direct me on a fix or at least narrowing down the cause of the problem
Phone - Verizon G2 v980
TLDR - replaced 3 different parts, and now phone display won't show anything - just black.
It all started when I was having some audio issues with the headset jack being loose, and headphones and aux output disconnecting easily and often. It was pissing me off, so I decided to replace it. (I'm no stranger to tearing apart and fixing small electronics but I never worked on the LG G2.
I figured since I was going to open it up, I'd replace the battery at the same time, and bought both off ebay.
When they finally arrived, I opened up my phone following a couple videos I'd found online (btw, no little black screw in mine, as it was a refurbed replacement via squaretrade.)
Unfortunately, through a combo of cheap 3rd party battery with a very stiff ribbon cable, and my clumsy fingers, I managed to destroy the logic board's battery connection port.
So I went on ebay to find a new board... I found a used verizon 32gb (mine was 16gb) board and got it delivered.
When I put it together, something is not working right, but I can't be sure what it is...
I think the board is bad, but am not 100%.
Screen is black
I can connect the phone to my computer, and it will autodownload the LG Verizon software, and show up in my file explorer. There's some files still there, but it looks like it was attempted to be cleaned, but not factory reset wiped (some personal data still there) but the dates are all showing 1970ish....
I have the phone connected up to the original charger, and the notification light pulses light to dark red as it charges up.
When I plug in the charger, I hear a buzz, and sometimes even a tone.
I hold down the power button, and eventually it vibrates again, and the notification LED pulses blue & green, and there's a brief backlight looking light with some vertical lines, another buzz and black screen. I'd think it was shut down, but it still shows in the computer, and the light to dark red pulsing continues (charging?)
knock on doesn't work
Should I return the board?
Saw some other threads about the proximity sensor, so I can check that out, but I didn't touch the screen...
Thanks in advance!
Update
No difference with proximity sensor disconnected.
With the old board in with busted power connector wedged in, it does nothing, except when plugged in, where it buzzes repeatedly.