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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 07-13-2017, 08:05   #1 (permalink)
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samsung galaxy s4 mini gt-9195 no power on


hello guys

i have the s4 mini with no power on...

so im messuring the battery connector with my multimeter on diode mode and i have 1320 with + to + and - to -

also i have 385 with + to - and - to +

so i plug in my power supply and i have no power draw at 4 volts...after pressing the power button i have 60 mA draw..nothing else

so far i have test and messure capacitors and didnt find someone damaged.

what you think for my problem?

also i need the electronic schematic for this board

thanks in advance guys
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Old 07-13-2017, 12:13   #2 (permalink)
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1-check a heating ic and replace it
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Old 07-13-2017, 13:07   #3 (permalink)
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Quote:
Originally Posted by habibboxes View Post
1-check a heating ic and replace it
thank you for the replay

yea i have already look for this....

i feel power ic and emmc ic little hot but im not sure cause the current draw is only 60mA
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Old 07-13-2017, 13:51   #4 (permalink)
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Quote:
Originally Posted by bisbaa View Post
thank you for the replay

yea i have already look for this....

i feel power ic and emmc ic little hot but im not sure cause the current draw is only 60mA
Put the power supply voltage at 4.3v and check
Or you can as well use freeze spray 75 it will show you faster heating ic and components
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Old 07-13-2017, 14:02   #5 (permalink)
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My advice for you :
Software:
Flash a boot file
Hardware:
1- clean your motherboard with ultrasonic cleaner with tiner liquid
2- check input and output voltage for power ic (pmic) same as schematic
3-resolder power ic(pmic) using past not flux not a long duration cause past can not stand longer time like the flux and of course you know the difference between this two
4-use z3x jtage to repaire emmc
5-replace emmc
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Old 07-13-2017, 14:04   #6 (permalink)
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Quote:
Originally Posted by habibboxes View Post
Put the power supply voltage at 4.3v and check
Or you can as well use freeze spray 75 it will show you faster heating ic and components
i have the same power draw at 4.3 so the heating procces is slow...

i really need the schematic to anderstand the current path and all that...or the schematis of the power ic atleast
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Old 07-13-2017, 14:27   #7 (permalink)
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Quote:
Originally Posted by habibboxes View Post
My advice for you :
Software:
Flash a boot file
Hardware:
1- clean your motherboard with ultrasonic cleaner with tiner liquid
2- check input and output voltage for power ic (pmic) same as schematic
3-resolder power ic(pmic) using past not flux not a long duration cause past can not stand longer time like the flux and of course you know the difference between this two
4-use z3x jtage to repaire emmc
5-replace emmc
thank you for your time my friend....

i have no schematic for power ic...can help me with this please?
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Old 07-13-2017, 21:49   #8 (permalink)
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https://000777software.********.com/...sheet.html?m=1
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Old 07-13-2017, 22:43   #9 (permalink)
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hmm something whorng with the link?
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Old 07-14-2017, 00:58   #10 (permalink)
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https://000777software.********.com/...sheet.html?m=1
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Old 07-14-2017, 00:59   #11 (permalink)
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http://https://000777software.******...sheet.html?m=1
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Old 07-14-2017, 01:02   #12 (permalink)
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Copy the link and past to yor browser it will open
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Old 07-14-2017, 01:28   #13 (permalink)
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didnt open but i find the way...

there is no schematic for gt 9195

thank you for your time

greetings
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Old 07-14-2017, 21:24   #14 (permalink)
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Quote:
Originally Posted by bisbaa View Post
didnt open but i find the way...

there is no schematic for gt 9195

thank you for your time

greetings
did you solve the probleme and how????
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Old 07-15-2017, 00:13   #15 (permalink)
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hello friend

im waiting some tools and stuff to start
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