Samsung galaxy S2 GT-I9100 Power On Not Working Solution Schematic Circuit Diagram

Samsung galaxy S2 GT-I9100 Power On Not Working Solution Step By Step 
Step 1
Cell-phone can`t power on.

Step 2

Check the Battery Voltage.

Is it more than 3.6V?

Charging the battery by TA.
If its voltage level is extremely low(under 3.0V),

Change the battery.

Step 3

Power-on the phone and check
the power-on sound
or motor vibration.

Sound or vibration is ok?

Change the MEA FRONT-OCTA LCD ASSY

SW re-download and re-booting

Step 4

Try to power on with anyway
jig. If booting is success with
anyway jig,check the PK601
(soldering crack, open, etc)

Change the PK601(Power-key FPCB)
And retry to the power-on operation.
※ Test condition (Power supply 4.0V)

Step 5

Check the U501 output voltage
(C535 > 2.0V, C418 or C554 > 1.2V)

If the output voltage is not satisfied with normal
condition, Change the U501.
※ Each voltage level has ±10% margin.

Step 6

Check the U501 output signal
(AP_PS_HOLD(TP) > 2.8V)

If the output voltage is not satisfied with normal.
condition, Change the UCP400.
※ Each voltage level has ±10% margin.

Step 7

Check the Clock OSC500(TP213)
Is that frequency 32.768Khz?

Change the OSC500.
If OSC400 does not still work, Change the U501
This problem is internal oscillator of U501.
※ Test condition (Oscilloscope setting)
: 20.0us.div (time division)

Step 8

check the initial operation

Step 9

END



Unofficial Support Site For This Phone By welcome Zone Haldwani 

HOME

Search Tags
Samsung Galaxy S2 GT-I9100 Power On Dead Solution not working Solution 
Samsung Galaxy S2 GT-I9100 Power On Dead Solution Not Responding Solution
Samsung Galaxy S2 GT-I9100 Power On Dead Solution Mobile device Not powerfull Solution

Android App For This Site

Samsung Usb Drivers
Samsung Android Usb Driver Download

Facebook Page
Do You Want More Update Click Here And Like This Page

Post a Comment