How to Repair an E-Flite Blade CX2

Check to make sure the three-in-one charger is plugged into the wall. Plug the three-in-one battery pack into the 7.4 volt terminal of the charger. If the red and green indicators on the charger do not both glow solid, there may be a problem with the battery pack and it should be swapped out with a new one.

Check the flight battery connection. Specifically, look to make sure the wire leads on the helicopter wiring connections are intact. If they are not, connect them by hand. Heat up a soldering iron and melt a small amount of solder on the copter's wire lead.

Replace the four AA batteries inside the transmitter if the transmitter will not power up.

Open the battery door and remove the batteries if the transmitter will not power up with new batteries.

Use a small Phillips screwdriver to remove the four screws in each corner of the transmitter casing.

Separate the two halves of the casing. Inspect the wiring leading to the battery supply. If there are any unattached wires, use wire strippers to strip them, connect them by hand and then solder them to secure them.

Inspect the circuit board for loose components or components that look as if they may have burned or short-circuited.

Use a soldering iron to melt the circuit board contacts of any damaged components.

Spray the circuit board with circuit board spray cleaner

Install the replacement component into the circuit board and then solder it into place.