Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band1 (2100) Rx not Working solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band1 (2100) Rx not Working solution
rrr Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band1 (2100) Rx not Working solution Root ^(http://appmarsh.com/)

Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band1 (2100) Rx not Working solution Step by Step
Step 1 

Steady Rx ON
Channel : 10700 CH
Cell energy : -60dBm

Step 2

U100 PIN30 -65dBm?
(L141 utilizing spectrum analyzer)

Resolder L141 or RFS100
Examine RFcable
No
U100 PIN30 -65dBm?
(L141 utilizing spectrum analyzer)

Step three

U100 PIN27, L132, L108
-68dBm?

Verify the U100`s
Ant. choice diagram

Resolder L132, L108
or Change U100

Examine Principal chip(UCP300)

Step4

F100 PIN1, L102, C128, L106
-75dBm?

Resolder L102, C128, L10
or Change F100

Step5

L129 -75dBm?

Change U100

Step 6

Verify voltage L129, R111,
L127, C161 = about 2.1V

Resolder L129, R111,
L127, C16
Step7

F106 PIN3,four, L128, C162, C166
-75dBm?

Resolder L128, C162, C166
or Change F106

Step8

Change U100


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Samsung Galaxy GT S  Duos S7562   WCDMA 3G Network Band1 (2100)Rx Solution
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Samsung Galaxy GT S Duos S7562  WCDMA 3G Network Band1 (2100) Rx Not obtain solution

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