Lockup when playing content


New Member
Fvp-4000t with latest firmware, has been perfect, the upgrade to latest firmware happened when it was first released and it's been fine. Nothing has changed at all, but yesterday, when playing movie files on a usb stick on the Pvr or any recorded files on the internal hard drive it locks up completely, no option but to pull the power lead out the back.
Tried today resetting to factory settings but still the same.
Any ideas please?