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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 05-22-2015, 14:23   #1 (permalink)
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N7100 Autopower after Flash inserting battery but after 2 time not power on


I've one N7100 in my handles that not power on.

Have inserted JIG for get in D.Mode and flashed last Original Stock FW then phone has rebotted in normal mode and working.

Goes for disconnect battery, power button not working in this pcb, and when put back in phone autopower, this for 2 time, at the 3 time stop of Autopower.

Have cecked power button in other N7100 pcb and button work perfect, so not understand what can be in short....customer have reported that had this issue when has charged with an Car power...

Anybody know where can be the short?

P.d. Changed also all Usb flat where there's Connector but nothing

BR
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Old 05-22-2015, 20:03   #2 (permalink)
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Quote:
Originally Posted by allumts View Post
I've one N7100 in my handles that not power on.

Have inserted JIG for get in D.Mode and flashed last Original Stock FW then phone has rebotted in normal mode and working.

Goes for disconnect battery, power button not working in this pcb, and when put back in phone autopower, this for 2 time, at the 3 time stop of Autopower.

Have cecked power button in other N7100 pcb and button work perfect, so not understand what can be in short....customer have reported that had this issue when has charged with an Car power...

Anybody know where can be the short?

P.d. Changed also all Usb flat where there's Connector but nothing

BR
allumts
only reason for auto power is power button...
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Old 05-22-2015, 20:14   #3 (permalink)
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Hi, power button tested on other same PCB "B" and is FULL working...

so isn't Power button...

or you think i will have posted here for one lol power button?...

this Power button NOT work only in this pcb "A" that after flash reboot normal and if take out battery for 2 time Autopower at the 3 time Not Autopower and Not work more this Flat with power button...
understand now that THIS pcb "B" have algo in short circuit?...only want know if anybody know what can be in short...

Very easy how is posted... PCB "A", (used for test), the same Power button work...in pcb "B", (with short), the same Power button Not work...

BR
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Old 05-23-2015, 10:18   #4 (permalink)
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You must change charging jeck.....
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Old 05-23-2015, 11:15   #5 (permalink)
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Quote:
Originally Posted by mandeepsaini667 View Post
You must change charging jeck.....
Thanks for you answere but....

Read good all thread first, loock:

Quote:
P.d. Changed also all Usb flat where there's Connector but nothing
Please Only answere from who know good this problem or have Datasheet of Power line...no more answere for case or only for do post numbers.

BR

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Old 05-24-2015, 08:59   #6 (permalink)
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If you have checked power Button and its working good, then its possible that phone is short, may be a resistance, or capister, i think you should look at board for about 5-7 minutes with a mirror, if all points are good, then its power IC issue, Because of Car Charger.

But the point is why it does not switch off in download Mode? You flashed it completely? May be you should change your flash file too.

or

Try to put your phone in Recovery Mode, If it does so, then its software Issue Sir.
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Old 05-24-2015, 09:46   #7 (permalink)
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@Akaash6255,

all ok only the first part of you post.

Who have wrote that Not flash correct or not enter in D.Mode or not goes in charge with wall charger?

Is obvius that w/o "Power Button" working cannot use the 3 combinaction fot it: Vol-/Home/Power togheter, so must need og Jig for get in this modality, ok now?

Phone Flash perfect after i get in D.Mode and reboot working very good in all funtion, but repeat for the 5 times, if i want use "poer Button" this not work.

If i take out battery and re put back for 2 time only goes in "Autopower", the 3 time STOP of working also "Autopower" but phone with Wall charger working.

Is CLEAR NOW?,

Please YOU and all Other that Know exact problem first of answer to this thread, Read carefully the problem and Test done, so answere only if Know name of IC, (no poer switch becouse this know perfect), capacitor, or other component that can be in Short becouse is clear that algo is in short circuit.

BR
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Old 07-19-2016, 10:24   #8 (permalink)
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Bro flash with pit file

Sent from my SM-J200G using Tapatalk
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Old 07-19-2016, 18:34   #9 (permalink)
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check power button ways,and also check capacitors in power switch ways
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