Rx13 doesnt spin forward the right motor
 

Among the various parts that came with a Tiger sh purchase there was a Rx13 considered broken. Having a bit of time at hand before the New Year, I tinkered it a bit (found a freid resistor and two deformed capacitors) and now it works as intended, except for one thing: it doesn't spin forward the right motor. I suppose that means a power transistor is fried.

Does anyone knows which transistor commands which motor movement on the rx13? Wouldn't mind fixing it and having it around as a spare.

thanks in advance for any help.

RE: Rx13 doesnt spin forward the right motor
 

I'm guessing the 3rd one or 2nd from the right for a Tiger. Test with multimeter and don't quote me! Going from (bad) memory!