There is definitely no corrosion on the transmitter battery terminals, I've tried dismantling the thing but no joy as yet, I suspect the on/off switch has failed.
Am I correct in thinking the esc and receiver are the same thing on this model as with the WLTOYS models?
Or it just hidden away? Kicking myself for buying 2nd hand now, constant issues are frustrating when it should be fun for a 6 yr old.
I can get a friend to check if the transmitter/controller is toast.
Thank you for all the advice and replies.