i9300 missing components - GSM-Forum

menesimo · 02-12-2014, 14:16

Hello, i have a pcb with this problem:

how to resolve?

the pcb is not mine.

Many thanks to all!
Simone

menesimo · 02-16-2014, 16:30

UP
help me please
many thanks

chrismcboy · 02-19-2014, 18:24

Dude what did you do ?
Missing pads !!! you can not repair, change board!

menesimo · 02-20-2014, 01:58

nothing is impossible

msnv · 02-20-2014, 03:28

Quote:

Originally Posted by menesimo

Hello, i have a pcb with this problem:

how to resolve?

the pcb is not mine.

Many thanks to all!
Simone

Mabey this help

Look this

msnv · 02-20-2014, 03:37

i9300_s3_schematics-msnv.html

msnv · 02-20-2014, 03:39

i9300_s3_schematics-msnv.html

menesimo · 02-21-2014, 04:34

many thanks! the pcb not start, i play power i get 0.2 ampere but the phone doesn't see nothing on display, are you help me to this problem? i rehot u500/501 but nothing thanks

laptopmd · 02-21-2014, 10:54

menesimo you get 0.2 ampere just by connecting the power supply to battery connector, OR after powering up the phone ?

If you connect the power supply and it show 0.2Ampere, there is a short on the board, and you have to remove this short before doing anything else.

Rehot is successful only on 10% of time, better is to remove, reball and resolder

menesimo · 02-21-2014, 19:47

Quote:

Originally Posted by laptopmd

menesimo you get 0.2 ampere just by connecting the power supply to battery connector, OR after powering up the phone ?

If you connect the power supply and it show 0.2Ampere, there is a short on the board, and you have to remove this short before doing anything else.

Rehot is successful only on 10% of time, better is to remove, reball and resolder

0.2 ampere when i power on the power supply and power on the phone. Ok reball the chip, thanks

menesimo · 02-22-2014, 22:23

update:
I press the power button, I get 0.2 amps but then you zero, as if the phone does not give the start real thing can be according to you? thanks

laptopmd · 02-22-2014, 22:42

Looks like eMMC damage symptom (memory chip damaged, tipycal on S3)

Or maybe if you are lucky, only bootloader failed..

menesimo · 02-23-2014, 22:57

mmm ok bootloader repair only jtag?
tomorrow i check bootloader
many thanks!

m_mobile · 02-24-2014, 08:58

Any solution? I have same problems.

laptopmd · 02-25-2014, 07:36

Quote:

Originally Posted by menesimo

mmm ok bootloader repair only jtag?
tomorrow i check bootloader
many thanks!

No menesimo, on S3 you can repair bootloader by making a special SD card.

Search on this forum "s3 bootloader repair sd", there is a thread that explain how to build this sd card.

But it can be also a pmic (power manager ic) issue, post a picture of the full board please..

02-12-2014, 14:16	#1 (permalink)
menesimo Major Poster Join Date: May 2013 Location: italy Posts: 47 Member: 1933011 Status: Offline Thanks Meter: 2	i9300 missing components Hello, i have a pcb with this problem: how to resolve? the pcb is not mine. Many thanks to all! Simone

02-20-2014, 03:37	#6 (permalink)
msnv Freak Poster Join Date: Jan 2008 Location: Belgrade - Serbia Age: 45 Posts: 181 Member: 669559 Status: Offline Thanks Meter: 156	i9300_s3_schematics-msnv.html Last edited by msnv; 02-20-2014 at 03:45. Reason: I wont to delete this post

02-16-2014, 16:30	#2 (permalink)
menesimo Major Poster Join Date: May 2013 Location: italy Posts: 47 Member: 1933011 Status: Offline Thanks Meter: 2	UP help me please many thanks

02-19-2014, 18:24	#3 (permalink)
chrismcboy Junior Member Join Date: Nov 2013 Posts: 9 Member: 2057646 Status: Offline Thanks Meter: 1	Dude what did you do ? Missing pads !!! you can not repair, change board!

02-20-2014, 01:58	#4 (permalink)
menesimo Major Poster Join Date: May 2013 Location: italy Posts: 47 Member: 1933011 Status: Offline Thanks Meter: 2	nothing is impossible

02-20-2014, 03:39	#7 (permalink)
msnv Freak Poster Join Date: Jan 2008 Location: Belgrade - Serbia Age: 45 Posts: 181 Member: 669559 Status: Offline Thanks Meter: 156	i9300_s3_schematics-msnv.html

02-21-2014, 04:34	#8 (permalink)
menesimo Major Poster Join Date: May 2013 Location: italy Posts: 47 Member: 1933011 Status: Offline Thanks Meter: 2	many thanks! the pcb not start, i play power i get 0.2 ampere but the phone doesn't see nothing on display, are you help me to this problem? i rehot u500/501 but nothing thanks

02-21-2014, 10:54	#9 (permalink)
laptopmd Freak Poster Join Date: Jan 2013 Location: Switzerland Age: 48 Posts: 408 Member: 1873863 Status: Offline Thanks Meter: 67	menesimo you get 0.2 ampere just by connecting the power supply to battery connector, OR after powering up the phone ? If you connect the power supply and it show 0.2Ampere, there is a short on the board, and you have to remove this short before doing anything else. Rehot is successful only on 10% of time, better is to remove, reball and resolder

02-22-2014, 22:23	#11 (permalink)
menesimo Major Poster Join Date: May 2013 Location: italy Posts: 47 Member: 1933011 Status: Offline Thanks Meter: 2	update: I press the power button, I get 0.2 amps but then you zero, as if the phone does not give the start real thing can be according to you? thanks

02-22-2014, 22:42	#12 (permalink)
laptopmd Freak Poster Join Date: Jan 2013 Location: Switzerland Age: 48 Posts: 408 Member: 1873863 Status: Offline Thanks Meter: 67	Looks like eMMC damage symptom (memory chip damaged, tipycal on S3) Or maybe if you are lucky, only bootloader failed..

02-23-2014, 22:57	#13 (permalink)
menesimo Major Poster Join Date: May 2013 Location: italy Posts: 47 Member: 1933011 Status: Offline Thanks Meter: 2	mmm ok bootloader repair only jtag? tomorrow i check bootloader many thanks!

02-24-2014, 08:58	#14 (permalink)
m_mobile Junior Member Join Date: May 2007 Location: Serbia Age: 37 Posts: 29 Member: 508968 Status: Offline Thanks Meter: 4	Any solution? I have same problems.