I bought it like this so I don't know the cause but it doesn't affect the screen beyond just being cracked. I got it for a bargain so I'm passing that on.
eBay
SmallRig Full DSLR Camera Cage for BMPCC 6K Pro Case DIY Rig for Blackmagic Pocket Cinema Camera 6K Pro with Cold Shoe 3270
Aliexpress UK
The Blackmagic Pocket Cinema Camera 6K Pro is a high-quality camera designed for film photography and videography enthusiasts. With a sleek black design and advanced features, such as 6K resolution and professional-grade lenses, this camera from Blackmagic is perfect for capturing stunning and detailed footage. The 6K Pro model offers superior image quality and colour accuracy, making it a top choice for filmmakers and photographers looking to take their work to the next level. DaVinci Resolve not included.
eBay
SmallRig for bmpcc 4k Cage DSLR Camera for Blackmagic Pocket 4k / 6K Camera for Blackmagic Pocket Cinema Camera 4K / 6K BMPCC 4K
Aliexpress UK
Its 6K recording down-samples to create stunning 4K HDR video that looks truly cinematic.
eBay
Andoer USB-C Power Cable Replacement for Blackmagic Pocket Cinema Camera BMPCC 4K/6K to USB Type-C Spring Cable
Aliexpress UK
Recording Formats: Blackmagic RAW, ProRes 422 HQ / LT / Proxy. Perfect for filmmakers and content creators seeking professional results with the flexibility of EF-mount lenses. Sensor: Super 35mm 6K HDR CMOS Sensor (23.10 x 12.99 mm).
eBay
SmallRig for 4K 6K Quick Release Camera Cage for Blackmagic Design Pocket Cinema 4K Cage With Nato Rail Could Shoe Mount 2203B
Aliexpress UK
Blackmagic Pocket Cinema Camera 6K EF and 50mm Canon Prime lens. Used only a handful of times for a short film project by a professional camera operator. It comes with a SmallRig Cage as well as a range of accessories such as a camera plate, rods, a V-lock battery plate, a d-tap battery adaptor, a field monitor screen holder, external HDD holder, two smallrig handles and 4 3rd party internal batteries. Original box and power cable for camera and original box for lens.
eBay
SmallRig 6K Camera Cage for Blackmagic Design Cinema 6K Full / Half Cage with Included Lens Mount Converter Support -4785
Aliexpress UK
D-Tap to BMPCC 6K power cable 1.5m. I found it very useful but if you don't love it you can always use the parts to build your own rig. Last picture shows how you can rig it out for shoots with a lens and rods.
eBay
WHOLESALES FOR NEW Ronins 4D 4-Axis Cinema Camera 6K Combo Kit Include Zenmuses X9-6K Full-Frame Video Camera and Gimbal
Aliexpress UK
Shop used Black Magic 6K Pro camera in fair condition. Comes with Tilta cage, battery, and charger. Perfect for budget filmmakers. Much loved camera, Used for all kinds of production and well look after
eBay
TILTA ES-T21-B Camera Cage for Blackmagic PYXIS 6K/12K Pro Kit V Mount Full cage Extended Shooting Side Panel V mount Accessorie
Aliexpress UK
Top Mint Shows minimal signs of careful use, overall in excellent condition. Near Mint Very light signs of use, overall very clean. All functions work perfectly. Excellent++ Visible wear and marks from use, fully operational.
eBay
NICEYRIG Universal Cheese Plate Cinema Camera Mounting Applicable for Sony FX3/FX30, BMPCC 6K Pro, URSA Mini, DSLR Cage Rig
Aliexpress UK