post a picture of your reciever board, lets have a look at it because even if it is soldered in you can still change it.
Originally Posted by bulldogmatto
Thanks for your help - I don`t believe I can do it - from what you are saying I should be able to swap old for new . There is no crystal to remove (eveything is soldered) and I realized the controller doesn`t have the socket to plug in the crystal . It is an ABC channel tank - the more expensive ones probably have the removeable crystals .