dead i9300 not turn on - missing capacitors - GSM-Forum

moshekatie · 12-19-2013, 01:47

hy guys, i got an dead i9300 and i want to try to fix it...
the main problem is that it wont turn on. i checked on the service manual which part i need to replace, but when i looked at the area of the U506 its seems that some capacitors are missing (C575, C564, C594)... i think somone try to replace the U506 and in the process kick them out.
so my question is this:
it can be that only those missing capacitors prevent the i9300 to turn on?
and how can i check this?

i cannot upload pic's... i dont know why i got error...

sorry for my bad english.

d-Artigo · 12-19-2013, 04:07

Quote:

Originally Posted by moshekatie

hy guys, i got an dead i9300 and i want to try to fix it...
the main problem is that it wont turn on. i checked on the service manual which part i need to replace, but when i looked at the area of the U506 its seems that some capacitors are missing (C575, C564, C594)... i think somone try to replace the U506 and in the process kick them out.
so my question is this:
it can be that only those missing capacitors prevent the i9300 to turn on?
and how can i check this?

i cannot upload pic's... i dont know why i got error...

sorry for my bad english.

try a third capacitor is lost because a third capacitor working voltage of U506 (micro usb interface controller)
1. C575 = 1000 nF 20% 6.3V
2. C564 = 4700 nF 20% 6.3V
3. C594 = 1000 nF 20% 10v

moshekatie · 12-28-2013, 23:18

Quote:

try a third capacitor is lost because a third capacitor working voltage of U506

sorry, but i didn't understood you...
can you clarify yourself please?
ntx!

moshekatie · 01-05-2014, 10:39

so... i asked my friend which is an electronic engineer what the purpose of those capasitors an he said that from what its seen in the scematic, these capasitors mainly filters noises so theoreticly the phone should be capable to turn on whitout them... so i going to replace the U506, and will see how it will effect this.

12-19-2013, 01:47	#1 (permalink)
moshekatie Major Poster Join Date: Nov 2010 Posts: 47 Member: 1439829 Status: Offline Thanks Meter: 10	dead i9300 not turn on - missing capacitors hy guys, i got an dead i9300 and i want to try to fix it... the main problem is that it wont turn on. i checked on the service manual which part i need to replace, but when i looked at the area of the U506 its seems that some capacitors are missing (C575, C564, C594)... i think somone try to replace the U506 and in the process kick them out. so my question is this: it can be that only those missing capacitors prevent the i9300 to turn on? and how can i check this? i cannot upload pic's... i dont know why i got error... sorry for my bad english.

01-05-2014, 10:39	#4 (permalink)
moshekatie Major Poster Join Date: Nov 2010 Posts: 47 Member: 1439829 Status: Offline Thanks Meter: 10	so... i asked my friend which is an electronic engineer what the purpose of those capasitors an he said that from what its seen in the scematic, these capasitors mainly filters noises so theoreticly the phone should be capable to turn on whitout them... so i going to replace the U506, and will see how it will effect this.