Eachine E120 User Manual Download Page 7

Chopper power on. Taillight on
Blinking, no response to 
operation.

After turning on the chopper 
power switch, the chopper
Nothing happened.

Push the throttle but the motor 
not at work, the receiver’s 

signal light keep flashing

Turn on the helicopter after 
bind, the main blade can rotate 
but the helicopter can not take 

off 

The helicopter is violently 
shaking

Main rotor deformed
cross shaft bent
tail rotor bent
Blade clamp screws are too 
tight to cause the main blade 
can not rotate

Change the main blade;
Change the cross shaft;
Change tail rotor;
Loose the blade clamp screw.

Chopper battery low, no 
paddles,Loose or stuck

Charge the battery or replace 
it with a fully charged one,
The propeller will be reinstalled 
and turned smoothly.

Helicopter’s battery has a low 
voltage;
The lipo battery has a poor 
connecting.

Charge the battery or change 
a full charge battery;
Connect the battery with 
receiver again.

Check the power supply of 
helicopter and transmitter;
Check the battery’s voltage of 
the helicopter and transmitter;
Batteries had a poor 
connecting.

Check the installation site of 
Transmitter’s batteries;
Use full voltage batteries;
Install the batteries again;

Confirm the batteries have a 

good connecting.

The helicopter without bind 
with the transmitter.

Bind the transmitter again

Abnormal Problem Solving Method

Helicopter spinning to left after 

take off.

The helicopter has a little yaw:

The helicopter has a serious 
yaw.

Check the servo if work properly;
Check the swash plate;
Check the rod sticks if loosing.

made a operational error of the 
trimming button

1.According to its yaw direction, 
push the trimming button in the 
opposite direction;
2.Reset the hovering point.

7

8

Tail motor has a poor power;
The blades loose;
Tail motor was broken.

Check the connection of tail 
blade and motor shaft. if loose, 
change tail blade or tail motor.

Problem

Possible Cause

Solution

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