Got a usb2 mini-B cable, installed the?CH340 driver and fired up uBITX Memory Manager. As I thought the s-meter had been set in memory by the previous owner (see attached) and I guess it's just responding to noise coming in through the A7 lead dangling in the breeze. I've now switched it off in Memory Manager as I'd prefer to get the analogue S-meter in the case working instead. I can always switch it back on again