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Samsung galaxy Grand i9082 WCDMA Band1 RX 3G Network not working Solution

Samsung galaxy Grand i9082 WCDMA Band1 RX 3G Network not working Solution Schematic , Diagram , Circuit 

Samsung galaxy Grand i9082 WCDMA Band1 RX 3G Network not working Solution Step by Step

Step 1

NORMAL CONDITION
catch the channel?

Step 2

Check L101 ≤ -65dBm ?
CHECK soldered
RFS100, L101, L144, C152, C153

Step 3

Check the Voltage at
C100 = VBAT_RF ?
Resolder or change
U101, C100

Step 4

Check L147, L109
≥ -65dBm ?
Resolder or change
L147, L109

Step 5

Check component
soldering status OK at
DUF101
Resolder or change
DUF101

Step 6

Check DUF101 PIN 1, 8
≥ -65dBm
Resolder or change
DUF101


Step 7

Check the voltage at
{C139,C138 =
VOUT_CHARGER ?}
& {L402
= VOUT_CHARGER?}
& {C136, C137,C453 = 2.7V ?}
& {C142, C143,C453 = 2.7V ?}
Resolder or change
U104

Step 8

WCDMA band1 Receiver is O.K
Resolder or change
UCP300
END

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Samsung Galaxy Grand i9082  WCDMA Band1 RX 3G Network not working solution 
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