plugged tx battery into rx

[moyesboy]

I was just in a LHS and there was a guy there with an electric heli, a 3d capable RTF of some sort - looked quite nice actually.
Seems after a few misunderstood problems and a fried ESC he had plugged the tx battery into the rx for some reason without understanding the consequences.

What would this have fried?
The Rx...
Possibly all the servos
Possibly the gyro.

Is there a risk to a new rx by plugging these in to see if they work?
The LHS were understandably reluctant to let him try a stock rx this way.

One essential bit of kit for setting up and testing an electric heli is a std rx battery so you can test everything without the ESC and with no possibility of the motor starting!
I'm suprised but Futaba use a normal rx/servo plug on the tx battery. Hitec quite sensibly use a 2 pin JST of some type - but who would predict someone removing the tx battery in order to plug it into the rx...

[ChrisB]

Voltage was probably too high for the Rx

[Ade_Law]

the rx would have passed the voltage onto the servos gyro and esc.

depending on the protection in them they could be fried too.

the RX shares the same power as the servos but i doubt fried servos will kill an rx. So in terms of plugging a new rx in i think you will be safe.

Ade

[Nutz]

The only RX that would be safe is the ones with built in BECS, there are lot of R/C 2ch cars RX's have. I do not know of any aircraft RX that have BECs built into them.

The power going into an aircraft RX has voltage rails in parallel so it would be the same effect as plugging the battery straight to the servos and gyro. If you plug a 9V battery into a 6V servo or gyro you will probably blow them unless the voltage rail in the RX goes open circuit first. Some electronic devices have a circuit protraction diode which goes short circuit to protect the rest of the circuit, this would cause problems if you plug the new RX in. Failing that it will burn the track on the PCB or kill the IC's.

[Biggles]

food for thought....how big is the heli and how big is a tranny battery?????

A bit lame IMO

[3dbasher]

ooooh b hatch... although i find it rather hilarious LMAO

[Biggles]

what was he gonna do hold the heli and fly the tranny???????LMAO by the sounds of it he would of have been safer going down that route!