T E A M
just read this on runryder and would like to share
copied from runryder :
This happened to me while buddy-boxing my helicopter.
The transmitter is an 8UHFS. We had just finished flying the raptor with a buddy lead attached to it, and I was changing the model to the Cuatro to give the student a go with a more stable model. While pushing the buttons, the 'LOW-BATT' warning suddenly appeared, and smoke started pouring out if the transmitter case. Switching it off had no effect, and I had to quickly remove the battery to stop it.
The post-mortem on the bench showed the problem was with the circuit board that holds the buddy lead socket. This board also has the main power connector, and the long pins that connect to the RF module. It is mounted on the same bit of plastic as the antenna. This plastic mounting had become deformed, and allowed the board to flex towards the anttenna. When the buddy lead was connected, at pushed the circuit board on to the anttenna, which then caused the short circuit.
We were VERY lucky that this did not happen while flying. So, if you are buddy-boxing, and notice that the buddy socket seems to be a bit wobbly, DO NOT FLY, fix it first.
please be careful
copied from runryder :
This happened to me while buddy-boxing my helicopter.
The transmitter is an 8UHFS. We had just finished flying the raptor with a buddy lead attached to it, and I was changing the model to the Cuatro to give the student a go with a more stable model. While pushing the buttons, the 'LOW-BATT' warning suddenly appeared, and smoke started pouring out if the transmitter case. Switching it off had no effect, and I had to quickly remove the battery to stop it.
The post-mortem on the bench showed the problem was with the circuit board that holds the buddy lead socket. This board also has the main power connector, and the long pins that connect to the RF module. It is mounted on the same bit of plastic as the antenna. This plastic mounting had become deformed, and allowed the board to flex towards the anttenna. When the buddy lead was connected, at pushed the circuit board on to the anttenna, which then caused the short circuit.
We were VERY lucky that this did not happen while flying. So, if you are buddy-boxing, and notice that the buddy socket seems to be a bit wobbly, DO NOT FLY, fix it first.
please be careful