Not sure how helpful the following info is, but I too have collided headfirst with the "No Card" issue with the 5" BMVA on a pair of new 128GB Sandisk Extreme's in the last week or so. I have used lots of other Sandisk cards with the unit without issue before now. Before seeing this thread, thinking they might just be faulty I registered them for a return and bought 2 x ExtremePros to replace them. Just received them and tried the first one and that's sadly giving me "no card" as well.
For what it's worth I have an Extreme with V30 branding (bought November 2017) that works absolutely fine, and two identically branded cards that show no card. As with others here, they work on every other device I've tried, including a new Hyperdeck Studio Mini. Picture attached.
- Problem-cards.jpg (583.66 KiB) Viewed 117188 times
For those collating the info the codes are as follows:
WORKING:
Sandisk Extreme v30 128GB Card (Bought Nov 17): BP1724950822G
NOT WORKING:
2 x Sandisk Extreme v30 128GB (Nov 18): both BP1826151762G
2 x Sandisk ExtremePRO v30 128GB (Nov 18): BP1828251766G (box code ending GN4IN)Sadly I don't have the packaging codes to check on the two gold cards or the working one. All of these cards were bought direct from Amazon in UK, so the original supplier is anyone's guess.
Obviously in the perfect world we would only ever buy proven cards from recommended retailers, but time and availability in a working shooting environment don't always allow this luxury. And whilst it's unclear what is at fault here, I must say this is the latest in several incidents that is making me think twice about Sandisk Products (same job I realised these cards wouldn't work in the BMVA I had a 480GB Extreme Pro SSD just fail also).
Similarly, whilst I'm sure a potential fix for this isn't totally in Blackmagic's control... this thread proves there's an issue and I would love to see them come and make a public statement about it. I imagine if this issue were to crop up with with same (hugely popular) cards the new BMPCC4K there would be a lot of angry vloggers out there!
Will follow this thread for updates, but my cards are going back to Amazon.