solution to Tecno K7 mouth piece solution not working after changing screen

The solution below works for Tecno K7 mic or mouthpiece not working. Either it just didn't work even after changing the down board or charging port panel, or you discovered it stopped working after changing the complete screen.

The problem may be due to bad connection in the LCD screen, instead of wasting another money to buy a new screen, check out the solution below, it solves the problem 100%.

This also is a solution for speaker not working even after changing the speaker / ringer and the down board / charging port panel.

Trace the broken link and apply jumper, Enjoy.


Tecno K7 mic / mouth piece not working

Tecno K7 mic speaker / ringer not working

Tecno K7 charging port not working


LAPTOP USB not working

Laptop USB port not working at all,

No sign or installation after pluging in a USB drive. 

The USB port is completely not responding.

Make sure you have checked and completely installed software update of your USB port before handling the solution below.

After software update of your USB port, still no luck, them the above problem maybe as a result of a burnt or damaged USB controller, or USB port IC. 

This controller or USB IC can be found just closed to the main USB port ( not the extension USB port)

Changing this USB controller or USB port IC completely solves the problem.


8 pin charging port convert to Normal 5pin

Convert 8pin charging port to normal 5pin.

How to make jumper on 8pin charging port

8pin charging port ways

Positive, + , +ve  and Negative, - , -ve interface of 8pin charging port

Tecno, itel, feature button phone, charging error, not charging solution


Tecno, itel,feature button phone, charging error or not charging solution.
This error is caused by bad charging controller/IC. This charging IC /controller/ can be found on the among the keypad or at the back of the board.
Changing the charging IC 100% solves the problem.


Tecno feature button phone charging error, not charging solution.

Itel feature button phone charging error, not charging solution.

China feature button phone charging error, not charging solution.

solution to Tecno K7 mouth piece solution not working after changing screen

The solution below works for Tecno K7 mic or mouthpiece not working. Either it just didn't work even after changing the down board or ch...