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Samsung galaxy Grand i9082 GSM 850 RX 2G Network not working Solution

Samsung galaxy Grand i9082 GSM850 RX 2G Network not working Solution Schematic , Diagram , Circuit 

Samsung galaxy Grand i9082 GSM850 RX 2G Network not working Solution Step by Step 

Step 1

NORMAL CONDITION
catch the channel?

Step 2

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

Step 3

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

Step 4

Check C111
≥ -65dBm ?
Resolder or change
C111,L108

Step 5

Check component
soldering status OK at
F100
Resolder or change
F100

Step 6

Check F100 PIN 3,4
≥ -65dBm
Resolder or chan
F100

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

Check the freq. at
OSC100
PIN1,3 : 26MHz ?
Change or resolder
OSC100

Step 9

GSM850 Receiver is O.K?
Resolder or change
UCP300
END
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Samsung Galaxy Grand i9082 GSM 850 RX 2G Network not working solution 
Samsung Galaxy Grand i9082 GSM 850 RX 2G Network not able to connect Solution
Samsung Galaxy Grand i9082 GSM 850 RX 2G Network not Response Solution

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Updated: 09/12/2015 — 11:03 PM

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