WCDMA Issues on Galaxy S3 after Water-Damage - GSM-Forum

kostelectronics · 08-11-2013, 00:31

Hi Guys,

I have a S3 (I9300) here which had a water damage. I Reballed the PMIC and some other corroded IC's. I had unknown BB after all that, but suddenly, the BB began to work. Now the WCDMA doens't work. I have Signal-bars but i can't see any Data-Communication, also i can't see the H+ or 3G Symbol near the Signal-bars. In normal GSM-Mode works all fine and i can make calls. Any ideas?

BR Matthias

habibboxes · 08-15-2013, 15:22

Quote:

Originally Posted by kostelectronics

Hi Guys,

I have a S3 (I9300) here which had a water damage. I Reballed the PMIC and some other corroded IC's. I had unknown BB after all that, but suddenly, the BB began to work. Now the WCDMA doens't work. I have Signal-bars but i can't see any Data-Communication, also i can't see the H+ or 3G Symbol near the Signal-bars. In normal GSM-Mode works all fine and i can make calls. Any ideas?

BR Matthias

Try this in the schematic

kostelectronics · 08-19-2013, 06:59

I have the schematics, but thank you.

I reballed now every IC in the RF-Part (except the BB Processor).

The Problem is a bit different now, the phone connects to the UMTS Network after 10 mins and sometimes i'm able to call but mostly not. then looses the Network again and reconnect after few minutes again.

habibboxes · 08-19-2013, 08:52

Well try to resolder u108 or change it

kostelectronics · 08-19-2013, 12:18

I have this already reballed and cleaned from the corrosion. the Output-voltages seems to be ok.

I have exchanged from another board to test:
- U106
- U102
- U103
- U106
- F100

No luck

Pls PM me, you seems to be a good guy

BR Matthias

hazar · 12-12-2014, 12:06

l have same Problem have you solved ???

08-11-2013, 00:31	#1 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	WCDMA Issues on Galaxy S3 after Water-Damage Hi Guys, I have a S3 (I9300) here which had a water damage. I Reballed the PMIC and some other corroded IC's. I had unknown BB after all that, but suddenly, the BB began to work. Now the WCDMA doens't work. I have Signal-bars but i can't see any Data-Communication, also i can't see the H+ or 3G Symbol near the Signal-bars. In normal GSM-Mode works all fine and i can make calls. Any ideas? BR Matthias

08-19-2013, 06:59	#3 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	I have the schematics, but thank you. I reballed now every IC in the RF-Part (except the BB Processor). The Problem is a bit different now, the phone connects to the UMTS Network after 10 mins and sometimes i'm able to call but mostly not. then looses the Network again and reconnect after few minutes again.

08-19-2013, 08:52	#4 (permalink)
habibboxes No Life Poster Join Date: Jan 2013 Location: lebanon Posts: 601 Member: 1869842 Status: Offline Sonork: 100.1625473 Thanks Meter: 186	Well try to resolder u108 or change it

08-19-2013, 12:18	#5 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	I have this already reballed and cleaned from the corrosion. the Output-voltages seems to be ok. I have exchanged from another board to test: - U106 - U102 - U103 - U106 - F100 No luck Pls PM me, you seems to be a good guy BR Matthias

12-12-2014, 12:06	#6 (permalink)
hazar Freak Poster Join Date: Aug 2007 Posts: 456 Member: 565487 Status: Offline Sonork: 100.1590618 Thanks Meter: 35	l have same Problem have you solved ???