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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Samsung > Samsung Hardware Repair

Samsung Hardware Repair Post here your Hardware Repairing Hints or Problems with Samsung Phones.

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Old 12-04-2013, 11:12   #1 (permalink)
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i9500 i9505 - not power on (hardware)

-Condition: Not power on
-i9505 Board attached to power supply shows 0.05 A.
-When power ON button pressed "A" not changing. stays on 0.05A.
-How to find which capacitor is shorted,
-maybe problem is in i9505 power IC ?

Solution, some kind of ?
Attached Images
File Type: jpg pm8917 power ic i9505.jpg (194.6 KB, 1266 views)
File Type: jpg power ic i9505.jpg (104.7 KB, 1310 views)

Last edited by unlock.mk; 12-04-2013 at 11:22.
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Old 12-04-2013, 11:47   #2 (permalink)
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Quote:
Originally Posted by unlock.mk View Post
-Condition: Not power on
-i9505 Board attached to power supply shows 0.05 A.
-When power ON button pressed "A" not changing. stays on 0.05A.
-How to find which capacitor is shorted,
-maybe problem is in i9505 power IC ?

Solution, some kind of ?
I got to mention 3 things more:

- On battery or charger connected, board becomes very hot.
- Riff box does't recognise this phone at all
- PC doesn't recognise phone eather.
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Old 12-04-2013, 12:46   #3 (permalink)
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Work progress made.
- Power IC reballed, result same.
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Old 12-04-2013, 14:00   #4 (permalink)
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Quote:
Originally Posted by unlock.mk View Post
I got to mention 3 things more:

- On battery or charger connected, board becomes very hot.
- Riff box does't recognise this phone at all
- PC doesn't recognise phone eather.


samsung gt-i9505 turn on problem
1. check or replace the two capacitors C835 and C838 (number 1)
(Repeated measure with avo meter or psu)
2. if the charger is still hot when in his third locker) number 2)
see the image below:





only thank button
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Old 12-04-2013, 14:23   #5 (permalink)
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I would check if there is voltage on power button , change the power ic , if there was an short on pcb , there will be high current consuption on power suply , check if quartz freqvency is ok.
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Old 03-24-2014, 20:17   #6 (permalink)
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Quote:
Originally Posted by unlock.mk View Post
-Condition: Not power on
-i9505 Board attached to power supply shows 0.05 A.
-When power ON button pressed "A" not changing. stays on 0.05A.
-How to find which capacitor is shorted,
-maybe problem is in i9505 power IC ?

Solution, some kind of ?
replace Ic Power!!!!
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Old 03-24-2014, 22:16   #7 (permalink)
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Put battery in, then connect via USB cable to PC,

IF PC will not show you a new hardware found your problem is POWER IC SUPERVISOR U800
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Old 05-08-2014, 11:12   #8 (permalink)
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Common problem but no solution !
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Old 06-10-2014, 12:40   #9 (permalink)
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i just want to confirm from you,I replaced the power IC and it works.
First thing i did was removing charging ic,the short gone but when I return it back even with other harging ic,the short return back also,so I decided to replaced the power ic, not reball.Must be replaced directly.
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Old 06-19-2014, 15:18   #10 (permalink)
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Quote:
Originally Posted by czaren View Post
i just want to confirm from you,I replaced the power IC and it works.
First thing i did was removing charging ic,the short gone but when I return it back even with other harging ic,the short return back also,so I decided to replaced the power ic, not reball.Must be replaced directly.
thanks for your kind reply.
Changed power ic and it's same short 0.05A with no power switch responce...i9505.
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Old 08-26-2014, 16:47   #11 (permalink)
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Quote:
Originally Posted by unlock.mk View Post
-Condition: Not power on
-i9505 Board attached to power supply shows 0.05 A.
-When power ON button pressed "A" not changing. stays on 0.05A.
-How to find which capacitor is shorted,
-maybe problem is in i9505 power IC ?

Solution, some kind of ?
any one solve this problem?
i9500 same symptoms
when putt charger charging ic heatup no response power button
changed charging ic
changed power ic
removed many capacitors
power button have 4v but when i press voltage dropped to 1v
no power
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Old 08-28-2014, 00:27   #12 (permalink)
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hi i have a samsung gt-i9505 speaker not working. i have replaced new speaker, still not responding. tested with new sub pcb, still not responding. plzzzzzzzzzzzzzzzzzzzzzz help
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Old 10-08-2014, 10:23   #13 (permalink)
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Hi ! i am entering in your same club...

i have received an i9505 with the same problem, when i connect power supply to battery terminal, it goes to 0.04a - 0.05a consumption and doesn't power on.

If i press power button, nothing happen.
Tried to replace MAX power ic... nothing.
Reballed U800... nothing.

Many voltage missing, especially S4_1P8 which is very important.
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