i have no guess. the reason for my question before - i had a runaway a while back- i just assume not go tru that agan if i can help it. what happened was the antenna wire that goes into the reciever broke off the printed circut board. near as i could figure, the antenna wire with its exposed solder connections shorted the reciever. - yes, the place on the recievers case- where the antenna wire goes tru- is. intended to be a strain relief. trouble is- its a loose fit- this puts all the strain on the circut board connection.- not good. you just need to remove the 2 small screws on the reciever case- gently pry the case apart on the end of the case where the antenna wire goes tru- apply a bit of shoe goo where the antenna wire straddles the reciever case- then assemble- let it cure.- all my recievers antenna wires had a loose fit.- i bet every one elses does too. silicone sealant is too soft, hot melt glue will not bond to the plastic case- antenna wire- i used good ol shoe goo.- goop whatever you wanna call it--