Bricked Pinetab?

[my3ke]

I updated my SD card via apt and all was well.  It's running Mobian and the emmc is UB Touch.  Rebooted the critter and all is dark.  I can hear some noises in the tab if I put my ear to it, and can power it down so it is quiet, but when I power it up, no display and the keyboard doesn't light up anymore.

So I removed my SD card to use Touch and it also doesn't respond!  That doesn't make sense.

So is there a procedure to restore the emmc to it's original settings, or at least to get Mobian working on the SD card again so I can use it once again?

thanks,
My3ke