Lightburn permanently disconnected to Emblaser 2

lightburn says disconnected to my Emblaser 2
It has happened all of a sudden after working fine for 2 years.
I have replaced usb cable
I have updated lightburn software
I have dismounted an remounted SD card
I have searched for devices using the device button

Any other suggestions?
Thanks

Also I have tried another computer, which also used to work with my Emblazer 2, but also reads disconnected.

I assume you’ve powered the laser down and back up again.

Yes, Laser powered down and back multiple times over 5 hours or debugging so far :slight_smile:

If all possibilities have been tried… I want to know at what point should I try reflashing the SD card or replacing the circuit board. Neither of which should have been damaged but last resort.

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