I was meant to update this. Its got me stumped. Currently running at 600m V5 for the past couple of days without issue. It could well be a problem with the Pi instead. But I don’t know. It works fine when it works. When the issue arose then it would take a couple of power cycles and then it would work fine on stock settings.
I would suggest removing all other sources of interference and working from the bare minimum to start. Replace the USB cable; they are notorius for failing and causing these types of issues. Try plugging into another processing unit or pc to see if the issue persists. Eliminate the Pi as an issue before moving on.
Yep tried three different cables all all experienced the same thing. Can’t try another pc as its windoze 10 and an arse.
Coincidentally this evening after knocking my desk, the cable moved and the problem started again. I’m going to take a look at the micro usb socket on the board and see if I can replace it.
Ah, okay...... so the issue has been somewhat narrowed. Unfortunate that a weak connection may be the culprit. Just as a point of reference I had something similar happen a few months back where it would start hashing and then immediately fade to nothing. Turned out there was too much draw on the one supply I was using although it was the same it had always been. I changed psu's and "eh voila" it was back. Still running strong at 738. As you replied to me on e-Bay I am interested and do have several Newpacs available that are no longer in use if you're interested in a trade/exchange. Would be great if you could get the pod sorted first of course, ha ha.