Mobile Repairing Course Online Free Class 19 Mobile Repairing Tips
100% Practical Mobile Reparing Tips
If Mobile Doesn't Switch On Then
1. Check Battery.
2. Try With The Charger.
3. Check Battery Connector.
4. Check Shorting In Fem, UEM, Backlignt IC, Audio Amplifier IC.
5. Check Power On/off Button.
6. 26 Mhz Crystal, CPU, Memory, Power IC
7. While Flashing Ist Boot Error And Iind Boot Error Shows Then Uem Is Faulty.
Low Netowork
1. Check PFO, Antina Switch And Fem IC
2. Check Antina And Its Contact Points.
Network Provoiders List Doesn't Show While Manual Search
- Check PFO, Antina Switch And Fem IC
Network Is Ok But Can't Call
- Check CPU And RF IC
In Manual Network Search, No Access Fault
- Check/change Antina Switch Or Fem IC
No Charging
- Check Charger, Charging Socket, Charging Fuse, Charging Coil, Diode, Charging IC
Not Charging, Charger is plugged
- Check charging protection register, charging IC
No Display
- Display, Display IC, Display Connector Check/Change
Buttons of The Keypad are Automatically Working
- Clearn the keypad, Check/Change keypad IC
Insert SIM Fault
- Check SIM Socket, SIM IC, Clean Battery point carbon, Change/Check the battery, SIM socket, Battery Connector.
Ringer is Not Working
- For this check ringer and it's jumper, also check logic IC and Audio Amplifier IC
Vibrator is Continuous ON
- For this check /change UEM IC
There is no Backlight ON
- For this check LEDs, Display Connector, Display Cable & Backlight IC.
Hands free is Not Working
- Check handsfree socket and UEM IC
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