Hello,
i want to connect external wifi antenna to S620 and i need some small help with that.
I dismantled the phone and removed shields from all ICs.
On picture 2 and 3 are Texas Instruments WiFi chips.
On picture 1 is other side of the board, with some metal piece and connector, which might be external wifi connector.
The connector is at opposite side in left bottom corner if you look at image 2, between PASS sticker and mounting hole, at the corner of large PCB ground pole.
Is that metal piece integrated antenna?
That connector is probably not U.FL.
Anyone know what type of connector is that?
Thanks.
Not sure but follow the link below for the service manual, it may give you some insight:
http://forum.xda-developers.com/showthread.php?t=402998&highlight=service+manual
if you managed tu connect it, let us know everything...
hope you can do it succesfully!!!
Ok, so i looked at the service manual, the connector is diagnostic (RF measurement) type, with switch.
MM8430-2600RA1
Probably will be in all HTC devices. So i will try to search on the forum, if anybody done this on different phone.
See page 9 and 10 for switch schematics and pinout
http://www.murata.com/catalog/o30e8.pdf
There are "probe" cables for it, but the probe connector is too big to hide under the cover.
I have a friend with experience with SMD, so i asked him if he can desolder it and solder pigtail with RSMA.
Cable can be taken out of the phone by using free space around hole which covers the GSM antenna connector.
I verified that by putting the cable in and closing the phone.
I also tried to hold stripped cable on the connector, with attached directional antenna and i picked up the APs in that direction, so it is working. (and really well)
The problem is that ground poles of the connector maybe connects ground to the power button, so after desoldering, it might not be possible to turn it on...
The safe way can be removing that piece of metal (yes, it is wifi antenna) and solder pigtail instead of it.
It should be simple, because under it are only two "paths" in PCB.
However, the best way is probably to solder it on opposite side, there is a PCB path from Wifi chips, going through the PCB, ending on middle pin of the connector.
But that cannot be done, because there is no way how to get the cable out of the phone.
I still prefer desoldering the connector, because it is placed "before" the antenna, so connecting it there would give a bit better results.
Edit: i searched the forum a bit, but all i found is service manual for Diamond, which seems to have U.FL connector. But i will not buy it because of that, only maybe when it will cost 80 USD like S620.
I acquired a broken touchscreen Tilt2 and repaired. All worked well until attempting Wi-Fi - signal very very poor Only a 1-2 bars in same room as router and almost nothing between walls. The wifi antenna is located on the cover below the keyboard. You need to take the four small torx screws out and use a non-marring pry tool to lift cover off (better directions elsewhere). There are two tabs that contact PCB - they were not making contact at all. There is a little slot in the case next to the USB connector .... looks like on mine someone else may have inserted something in the this slot (maybe the micro SD card?). I replaced the screen without full case assembly, the rear cover void stickers were still intact so I know it didn't happen from my or another's dis-assembly. I bent the tabs (carefully as I read they break easy) reassembled and now get excellent reception FYI under the top speaker assembly is two other antennas for Cell Radio and GPS with the same type contacts if having problems with either of those. Hope this helps out someone, saw a lot of similar wi-fi problems in the posts but not much on location/repair of antenna. Good Luck!
I believe the component identified by the arrow in the attached picture is an inductor (high Q, multilayer chip inductor?), but I need specifications sufficient to allow me to find a replacement. I damaged this component with a solder splatter while replacing the USB port. There is virtually no CDMA/LTE signal reception without it.
Even if a schematic can be found out there on the interwebs (I haven't found one, though), would it help me identify it? Any leads? Thanks folks.
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.
Hi all, So my phone (wife's phone ) got water damage, after battery replacement things start working except the wifi and bluetooth I think it might be the board or the cables got damaged but could not find any information where the antenna for wifi and bluetooth are and which board actually has the chip. I will try to replace the board but don't even know which one to order. Does anybody know?
PS none of the disassembly guides or videos I saw mentions the location of these.
No one has any idea where the wifi blutooth on this device?