Elon's School

Facing no sound problem in any device ? ____________________________ Mostly after sound ic output there are two resistances in line .. just search in your pcb where are they -  ____________________________ Example -1 ____________________________ Example-2 Mi 4x Just make jumper on spk points or you can check  directly the spk line with multimeter with beep mode. It's very easy. ____________________________

Missing the tracks ? ____________________________ If you're facing broken tracks or no power supply to charging point. Step-1  Find in PCB where is VBUS OR VCH point EXAMPLE -  NOW JUST MAKE A JUMPER DIRECT TO CHARGING POSITIVE TO VCHG ____________________________ Sometimes it's fixes Fake Charging Too ____________________________ Just a simple Jumper to solve missing lines or tracks ____________________________ VBUS to VCHG  ____________________________

First - You need To Hard reset your device MI-  FOR MI SWITCH OF THE DEVICE AND HOLD PWR + VOLUME UP AND WAIT .. NOW YOUR DEVICE IS IN RECOVERY MODE. NOW WIPE DATA. WAIT FOR DEVICE TO BOOT UP IT MAY TAKE UPTO FIVE MINUTES NOW FOR THE FRP FOLLOW THE STEPS- ____________________________ STEP -1  DON'T CONNECT DEVICE TO WIFI OR REMOVE THE SIM CARDS . (Important) ____________________________ STEP -2  GO WITH SETUP AND SETUP AS A NEW DEVICE. ____________________________ STEP -3 SETUP A PIN OR PATTERN ( Important) ____________________________ STEP -4 GO AND COMPLETE SETUP WHEN YOU GET ERROR FOR DEVICE NOT SIGNED UP AND YOU WILL BE NAVIGATED AS YOUR SETUP WELCOME SCREEN. ____________________________ STEP -5 NOW CONNECT YOUR DEVICE TO A WIFI OR NETWORK (Important) ____________________________ STEP -6 GO WITH SETUP AND DEVICE WILL ASK FOR LAST PIN, PATTERN YOU MAKED. THEN ENTER YOUR PIN AND CLICK TO NEXT.  ____________________________ STEP -7  NOW CLICK TO SKIP AS DEVICE ...

Most mobile companies provide PCB circuit pinouts for every section. Example- Today we are going to provide you basic full forms of those pinout names. PWR = Power Button  VCH/VBUS = CHARGING 5V INPUT VBAT = BATTERY POSITIVE VIB/VB = VIBRATION MOTOR POINTS SPK = SPEAKER OUTPUT GND = GROUND DP= USB DATA POSITIVE DM= USB DATA NEGATIVE HSPKR = HANDFREE SPEAKER RIGHT HSPKL = HANDFREE SPEAKER LEFT HSMIC = HANDFREE SOUND MIC ___________________________

First of all you have to understand what is the fault and what is the last state of device when it's working fine. Ask to customer for details as conditions effect to device and accure as fault. Now follow the steps-  Step - 1 - check removable parts or the parts who interfacing the user daily. Like- charging jack, mic, speaker, sim card slot, mmc slot, sim tray, fingerprint sensor, power and volume up and down buttons. _________________________ Step - 2 - Replace parts with care and love as you repairing your own device.  __________________________ Step - 3 - Check the fault you repaired. __________________________ If problem is solved then congratulations otherwise follow the step - 4 _________________________ Step - 4 - If problem is still there then start checking tracks and try to solve them to using jumper wire or use your own logic to maintain the current flow. __________________________ Step - 5 - forget yourself as a machanic and think like a farmer who just wanna mak...