2
Score
Ace
25
Asked
No Signal - No Service - No Capacitor - Motherboard picture
Hi to all,
this is my first post here. I heard about this forum on another website...that hear are professionals and they could help me maybe.
So my problem...i have bought an used iPhone 4 which is factory unlocked and jailbreaked. When i put my sim card inside i can use
WIFI without problems, but i don't get phone signal...always searching and no signal - no service.
So i decided to open the phone, and look...
- i see a broken signal antenna which was not connected anymore (I will buy a new one and replace it)
- the battery bracket connector was not there - somebody removed it and lost (I will buy a new one and replace it)
- i don't see the small blue capacitor-coil...and there shold be another small capacitor (smd)...look at the picture (?????)
[B]
Picture: http://oi46.tinypic.com/n532i8.jpg [/B]
Can somebody tell me if this is normal that there is no capacitor near the antenna connection? I looked on other pictures of iphone logic boards and
saw, that they have a small blue capacitor there and also another one capacitor, which is same size but not blue.
Should i buy new smd capacitors and solder on the board or? What are the suggestions...a
Thank you guys for your help in advance!
2
Score
Mustafa
263
Answered
Hi,
Please check the image:
Red :This is the antenna.You have to change it.
Blue : The antenna connector.Try to repear it somehow or just change it.
Yellow: Just make a bridge between this two points.
It should work :)
Hi Mustafa, thank you very much for your help. I ordered a new antenna. When it will arrive, i will replace it an try to connect this two points. You have any idea what to use for cennecting this two points? Soldering wire or a small cable? :)
Ace,
0
Score
Jordy
11
Answered
Depending on your soldering skills you could also use liquid silver. It is really easy to apply and is made for situations like this. I often do iPhone repairs and find this very usefull. But keep in mind that this stuff is more expensive then soldering, i paid €30,- for it.
Good luck
0
Score
Answered
0
Score
Ace
25
Answered
Hi to all :)
Many thanks to everybody for all your answers and help.
1. I ordered a new antenna and replaced it
2. I just straightened antenna connector a little bit
3. I did solder a bridge - where the blue coil should be located
And the signal is there. Great...but i see now the wifi signal get worse, then before...hmmm.
0
Score
Alan
1
Answered
Hola soy de Argentina y tengo el mismo problema! adquiri un Iphone 4 16gb Black, sin garantia que supuestamente estaba BLOQUEADO. cosa que asi no fue, el telefono esta liberado por imei, de todos modos no levanta señal. Aparece buscando y luego SIN SERVICIO. Lo desarme y veo que no hay continuidad en la antena entre los positivos. Alguien puede ayudarme? mi email es ALANCMG@GMAIL.C
Hi, I think those are coupling capacitors, try any value from 1nf. I could be wrong but I think it is one of those. Write back what you did. Good luck.
John Savio,
Hello John! Did it work? Did you resolve the signal problem (no service)?
Sebastian,