Samsung galaxy S2 GT-I9100 WCDMA BAND5 TX 3G Network Not Working Solution

Samsung galaxy S2 GT-I9100 WCDMA BAND5 TX 3G Network Not Working Solution  Schematic,Circuit,Diagram

Samsung galaxy S2 GT-I9100 WCDMA BAND5 TX 3G Network Not Working Solution Step By Step

Step 1

Check U101 PIN11 :

About 22 dBm ?

CHECK soldered

- RFS100,L107,C107,L108,

C106,C104,C105,ANT100

Step 2

Check the Voltage at
C102 = VBATT ?

Resolder or change
U101, C102

Step 3

Check C100, L100 :
About 22dBm ?

Resolder or change
C100, L100

Step 4

Check component
soldering status OK at
F100

Resolder or change
F100

Step 5

Check C128, C133
About 22dBm ?

Resolder or change
C128, C133

Step 6

Check the Voltage at
R741,C117=VOUT_CHARGER?

Resolder or change
PAM100, R741, C117

Step 7

Check C125, L112 :
About 0dBm ?

Resolder or change
C125, L112

Step 8

Check the voltage at
{C138 = VOUT_CHARGER ?}
& {C169, C170, C171
= VOUT_CHARGER?}
& {C137, C174 = 2.85V ?}
& {C134, C176 = 2.65V ?}
& {C136, C178 = 1.8V?}

& {C135, C175, C173 = 1.2V?}

Resolder or change

U104

Step 9

Check the freq. at C123
: 26MHz ?

Change or resolder
OSC100

Step 10

WCDMA band5 Transmitter is O.K?

Resolder or change
UCP300

Step 11

END

Unofficial Support Site For This Phone By welcome Zone Haldwani 

HOME

Search Tags

Samsung Galaxy S2 GT-I9100 WCDMA BAND5 TX 3G Network  Not working Solution 

Samsung Galaxy S2 GT-I9100 WCDMA BAND5 TX 3G Network Not Responding Solution

Samsung Galaxy S2 GT-I9100 WCDMA BAND5 TX 3G Network  Not Properly Work Solution

Android App For This Site

Download

Samsung Usb Drivers

Samsung Android Usb Driver Download

Facebook Page

Do You Want More Update Click Here And Like This Page