Galaxy S3 (i9300) Baseband failure after Water Damage - GSM-Forum

kostelectronics · 02-26-2013, 00:35

Hi all,

First, i did not much Samsung repairs till now (only 5-6 water damaged S2 and 1-2 S3).

This time, i have an S3 on my table with middle strong water-damage. The Baseband doesn't work (no IMEI, no BB-Version, CP: unknown).

I ckecked CP_VSD1 (C342) =0.9~1.4V and CP_VSD2 (C344) = 1.8V ---->OK

I checked also for corrosion on Coils, shorted caps etc....but i didn't found anything bad.

Does anybody have an idea what this can be?

BR Matthias

kostelectronics · 02-26-2013, 12:25

Update: CP_VSD2 (C344) = 2.0V and VIO_1.2V = 1.6V and some other voltages around UCP300 seems to be a little bit higher than in the schematic specified. ???

kostelectronics · 02-27-2013, 18:03

No ideas? ...the voltages around the BB-CPU are ok, it was because i operated the board not on own Battery. Can it be a software problem?

mogrem.soft · 02-28-2013, 23:57

Quote:

Originally Posted by kostelectronics

No ideas? ...the voltages around the BB-CPU are ok, it was because i operated the board not on own Battery. Can it be a software problem?

May be, try to repair basband first then Repair Imei .
ASANSAM BEST choice

kostelectronics · 03-01-2013, 12:39

Yes, this i know. But does anybody have expierience with dead BB on this phone?

laptopmd · 03-01-2013, 16:51

Hi kostelectronics, i have a SGS3 working board, but with damaged lcd.

I can give you the voltages if you need to compare the values.

Let me know, regards!
David

DAROCKS · 09-06-2013, 04:45

Quote:

Originally Posted by kostelectronics

No ideas? ...the voltages around the BB-CPU are ok, it was because i operated the board not on own Battery. Can it be a software problem?

same problem did you get this sorted or anyone else know ? also have audio sound problem when used the sound crackly static sound on all speakers/headjack

02-26-2013, 00:35	#1 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	Galaxy S3 (i9300) Baseband failure after Water Damage Hi all, First, i did not much Samsung repairs till now (only 5-6 water damaged S2 and 1-2 S3). This time, i have an S3 on my table with middle strong water-damage. The Baseband doesn't work (no IMEI, no BB-Version, CP: unknown). I ckecked CP_VSD1 (C342) =0.9~1.4V and CP_VSD2 (C344) = 1.8V ---->OK I checked also for corrosion on Coils, shorted caps etc....but i didn't found anything bad. Does anybody have an idea what this can be? BR Matthias

02-26-2013, 12:25	#2 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	Update: CP_VSD2 (C344) = 2.0V and VIO_1.2V = 1.6V and some other voltages around UCP300 seems to be a little bit higher than in the schematic specified. ???

02-27-2013, 18:03	#3 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	No ideas? ...the voltages around the BB-CPU are ok, it was because i operated the board not on own Battery. Can it be a software problem?

03-01-2013, 12:39	#5 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	Yes, this i know. But does anybody have expierience with dead BB on this phone?

03-01-2013, 16:51	#6 (permalink)
laptopmd Freak Poster Join Date: Jan 2013 Location: Switzerland Age: 48 Posts: 408 Member: 1873863 Status: Offline Thanks Meter: 67	Hi kostelectronics, i have a SGS3 working board, but with damaged lcd. I can give you the voltages if you need to compare the values. Let me know, regards! David