Airsoft fault finding

[DevonportDave]

Hi Guys, Yoda like advice required please.
I have a Taigen metal hull Jagdpanther with airsoft BB and was dry firing it without any BB's and I had a snag.
I had the left stick forward to initiate the firing sequence and about half way through the cycle I let go of the left stick and it centralised without finishing the firing cycle. Now nothing happens when I push the left stick forward.
I have tried the normal on/off and battery change but still no joy and also shorted together the contact switch which causes the track recoil and firing sound to function but still no cocking of the gun.
Any advice much appreciated.
Dave

[greengiant]

Have you separated the contact switch ends were they stuck together and tried firing it again. Doubt that is the problem.
Could be that one of the wires to the airsoft motor may have come loose but is still looks like it is soldered on. I have had that happen at random and the airsoft just stops partially cocked.

[jtracks]

I would also unplug the 8 pin connector and the connector for the gun and re-install. greengiant may be on to something however. I had never seen so many cold solder joints until I started looking around on the inside of these tanks.

[wibblywobbly]

These have a motor that receives a pulse of power, when you push the stick to fire, it sends a 5v pulse to the airsoft circuit.

This starts the motor and fires the BB.
There 'may' be a microswitch on the airsoft body. This 'makes' the circuit when the motor is at the start point.

If the airsoft does not complete a full cycle, the microswitch contacts will be in the wrong position and no power will get to the motor. It is therefore stuck halfway with no power to move the motor back to the start position.

If you can get to it try gently pushing the contacts while flicking the stick, and try and get the motor back to its primed position. Because the airsoft circuit operates on a pulse rather than a continuous power supply, you will have to keep flicking the stick to jog the power to the airsoft motor. If there is no microswitch then try repeatedly flicking the stick and see if that jogs it back to where it should be.