Thanks Philips/BenQ
Stuck on leadin for about 2 minutes or more then tried to burn as the counter ticked down to 0 minutes left halfway through the burn then ‘error’, did this twice then after a reboot the tray wouldnt eject, however the drive did flash back to official philips FW and was recognised fine but would only open via the emergency eject hole.
luckily i only had to nip into town for a replacement how long it lasts however is anybodys guess