Samsung galaxy Grand i9082 cell phone can not Power On Solution

Samsung galaxy Grand i9082 cell phone can not Power On Solution   Schematic , Diagram , Circuit

galaxy-grand-duos-i9082 Samsung galaxy Grand i9082 cell phone can not Power On Solution Root ^(http://appmarsh.com/)


Samsung galaxy Grand i9082 Dead Solution  Step via Step 

Cell-phone can`t power on:-

Step1

Read about the Battery Voltage.
Is it more than three.6V?

Charging the battery by way of TA.
If its voltage level is awfully low(beneath three.0V),
Amendment the battery

Step 2

Power-at the phone and read about
the power-on sound
or motor vibration.
Sound or vibration is fine?

Amendment the MEA FRONT-OCTA LCD ASSY

SW re-download and re-booting

Step three

Try to power on with besides
jig. If booting is good fortune with
besides jig,examine ANT_505
(soldering crack, open, and so on)

Amendment the ANT_505(Power-key FPCB)
And retry to the power-on operation.
※ Test state of affairs (Power supply 4.0V)

Step4

Read about the U400 output voltage

If the output voltage is not satisfied with common
state of affairs, Amendment the U400.
※ Each and every voltage level has ±10% margin.

Step 5

Check the U400 output signal
(ON_SW > 2.8V)

If the output voltage is not satisfied with common.
state of affairs, Amendment the UCP300.
※ Each and every voltage level has ±10% margin.

Step 6

Read about the Clock OSC400(C462)
Is that frequency 32.768Khz?

Amendment the OSC400.
If OSC400 does not however paintings, Amendment the U400
This problem is internal oscillator of U400.
※ Test state of affairs (Oscilloscope surroundings)
: 20.0us.div (time department)

Step 7

examine the initial operation

END

i9083%2Bdead%2BSolution Samsung galaxy Grand i9082 cell phone can not Power On Solution Root
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