To replace the tny176 power chip, you first need to ensure that the new chip has the same pin function and electrical characteristics as the original chip.
Then, turn off the power and use the appropriate tools to remove the original chip from the board.
Next, insert the new chip correctly into the appropriate position and ensure that the pins are aligned with the pads on the board.
Finally, reconnect the power supply and perform the necessary testing and verification to ensure that the new chip works properly. When replacing any electronic component, it is important to be careful and follow the correct procedure to avoid damaging the circuit board or other components.