Samsung galaxy S4 I9500 GSM850/GSM900 TX Network Not Working Solution

Samsung galaxy S4 I9500  GSM850/GSM900 TX 3G Network Not Working Solution Schematic,Circuit,Diagram

Samsung galaxy S4 I9500  GSM850/GSM900 TX 3G Network Not Working Solution Step By Step

Step 1

F100 PIN 4 :
About 30dBm ?

CHECK soldered

- RFS100, L111, C136

Step 2

Check F100 PIN 6

About 30dBm

Resolder or change

F100

Step3

Check the Voltage at

C166 = VBATT ?

Resolder or change

C166, L119

Step 4

Check component

soldering status OK at

F101

Resolder or change

F101

Step 5 

Check F101 PIN 9

About 30dBm ?

Resolder or change

F101

Step 6

Check U102 PIN 4

About 30dBm ?

Resolder or change

L117, C153

Step 7

Check U102 PIN 26

About 10dBm?

Resolder or change

U102

Step 8

Check the freq. at

OSC100 PIN 4 : 26MHz ?

Change or resolder

OSC100

Step 9

Check component

soldering status ok at

U103

Resolder or change

U103

Step 10

GSM850/900 Transmitter is O.K?

Resolder or change

U300

Step 11

END

Unofficial Support Site For This Phone By Welcome Zone Haldwani

HOME

Search Tags

Samsung Galaxy S4 I9500  GSM850/GSM900 TX Network Not Working Solution 

Samsung Galaxy S4 I9500  GSM850/GSM900 TX Network Not Responding Solution

Samsung Galaxy S4 I9500  GSM850/GSM900 TX Service 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