REFERENCE Samsung A12 Nacho (SM-A127F) Wi-Fi problem and Insert Sim

Gimtech

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Good Day mga idol share kulang to wi-fi problem and insert sim, yung ginawa ko focus muna ako sa wifi open borneo check ko voltage at ito na pansin ko mababa voltage ng VRF_PA_WLBT_1p8 nasa 0.8V lang na dapat is 1.8V check lines
A12 .png
Check ko kung san pa ibang lines or ka dugtong nya at ito sya and found out na putol line and isang supply pala sina ng baseband kaya cguro insert sim din unit
A12 connection.png
Ginawa ko hanap ako pinaka malapit at nakita ko is yung supply sa baseband kaya dito naku nag jamper from PMIC
a12 jj.png
At ito na mga idol done na, ok na wifi and signal, salamat!
sfsfs.png
 
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