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Samsung gt s7562 Samsung Galaxy S Duos S7562 GSM 900 Rx not Working solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 GSM 900 Rx not Working solution Schematic, Diagram,Circuit
Samsung gt s7562 Samsung Galaxy S Duos S7562 GSM 900 Rx not Working solution Step By Step
Step 1
Continuous Rx ON
Channel : 37 CH
Cell power : -60dBm
Step 2
U100 PIN30 ≥ -65dBm?
(L141 using spectrum analyzer)
Resolder L141 or RFS100
Check RFcable
Step 3
U100 PIN22, L110, L115
≥ -68dBm?
U100 PIN22, L110, L115
≥ -68dBm?
Resolder L110, L115
or Change U100
Check Main Chip(UCP300)
Step 4

PIN8,9
L140, L139, L109 ≥ -75dBm?
Resolder L140, L139, L109
No
Step 5

Change U100
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Samsung Galaxy GT S  Duos S7562  GSM 900 Rx Solution
Samsung Galaxy GT S Duos S7562  GSM 900 Rx Not Working Solution
Samsung Galaxy GT S Duos S7562 GSM 900 Rx Not receive solution

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Updated: 09/12/2015 — 11:04 PM

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