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| Samsung Hardware Repair Post here your Hardware Repairing Hints or Problems with Samsung Phones. |
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12-04-2013, 12:12
| #1 (permalink) |
| No Life Poster   Join Date: Oct 2011 Location: Macedonia
Posts: 1,196
Member: 1671934 Status: Offline Thanks Meter: 247 | i9500 i9505 - not power on (hardware) -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 ? Last edited by unlock.mk; 12-04-2013 at 12:22. |
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12-04-2013, 12:47
| #2 (permalink) | |
| No Life Poster Join Date: Oct 2011 Location: Macedonia
Posts: 1,196
Member: 1671934 Status: Offline Thanks Meter: 247 | Quote:
- 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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12-04-2013, 15:00
| #4 (permalink) | |
| No Life Poster  Join Date: May 2011 Location: gsm-forum
Posts: 4,148
Member: 1573913 Status: Offline Sonork: hardware illustration Thanks Meter: 7,629 | Quote:
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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12-04-2013, 15:23
| #5 (permalink) |
| No Life Poster  Join Date: Sep 2004 Location: Romania Age: 42
Posts: 1,598
Member: 81232 Status: Offline Thanks Meter: 196 | 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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03-24-2014, 20:17
| #6 (permalink) | |
| Freak Poster  Join Date: Jun 2011 Location: Dominican Republic
Posts: 219
Member: 1607116 Status: Offline Sonork: 100.1617729 Thanks Meter: 52  | Quote:
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06-10-2014, 12:40
| #9 (permalink) |
| Freak Poster  Join Date: Mar 2008 Location: Kuwait
Posts: 243
Member: 735013 Status: Offline Thanks Meter: 74 | 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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06-19-2014, 15:18
| #10 (permalink) | |
| No Life Poster  Join Date: Apr 2007 Location: Motalib Plaza,Dhaka,Bangladesh Age: 39
Posts: 806
Member: 485407 Status: Offline Sonork: 100.1580486 Thanks Meter: 183 | Quote:
Changed power ic and it's same short 0.05A with no power switch responce...i9505. | |
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08-26-2014, 16:47
| #11 (permalink) | |
| Moderator   Join Date: Jan 2008 Location: <jeddah al saudia> Age: 36
Posts: 2,261
Member: 668050 Status: Offline Sonork: 100.1656307 Thanks Meter: 991 | Quote:
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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08-28-2014, 00:27
| #12 (permalink) |
| Junior Member Join Date: Apr 2013 Location: Suva., Fiji Islands Age: 33
Posts: 1
Member: 1911256 Status: Offline Sonork: reshikadeo Thanks Meter: 0 | 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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10-08-2014, 10:23
| #13 (permalink) |
| Freak Poster Join Date: Jan 2013 Location: Switzerland Age: 48
Posts: 408
Member: 1873863 Status: Offline Thanks Meter: 67 | 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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11-21-2014, 19:33
| #15 (permalink) |
| Junior Member Join Date: Aug 2014 Location: United Kingdom
Posts: 18
Member: 2237030 Status: Offline Thanks Meter: 9 | If the current 50ma that means the VPH _PWR line shorted most of the cases,(you can check it easily wit multi meter) so all the components which use this voltage can be faulty. Some times very easy to fund the faulty components when it is a capacitor, because its burning or damading itself. My suggestion: 1. Look through the whole main board (with microscope) and if you fund a burned, broken capacitor just broke it down 2. Remove the U800 and give 4 volts to the output VPH _PWR with your powersuply, in this case the shorted components gonna heating up (be careful because it will be very hot) |
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