Well, finally things are looking up for a change, after installing the AR6100e rx and leaving it for a few hours I've just switched it on and it is still working! I'll now leave it over night and see if all is well tomorrow morning.There is definitely something not quite right with these Orange rx's. I kept trying to bind them last night using a spare battery pack and all I was getting was a very low static dim light and I could do nothing with them. Tonight however, I plugged in the battery in turn and they both had the bright flashing internal light that was missing last night, most strange, anyway I cannot afford to chance using them after what has happened on either the Southampton or the Zeeland and so I have decided to bin them. So if anyone is thinking of buying an Orange rx unit just be careful what you are actually buying. I am not referring to the 'proper' Orange units which work fine but on EBay these copies are so good you'd be hard pressed to tell the difference. The two types I have are the 2.4Ghz R610 and R620 - beware! Andy