FWIW, my 620 is doing the same thing. Shutting down for no reason and not saving the file. It’s a $49 one with firmware 2.33 and I can’t find firmware updates available anywhere. I think my Marantz days are done.
I am dismayed and sorry to hear about the issues for the new PMD 706, but I wouldn't lump in the PMD 620 with a newly released deck. In fairness, the PMD 620 was designed by Marantz under different ownership as this division has been bought and sold a few times. I have a PMD620MKII, and it has performed flawlessly for dozens of recordings, not a single issue ever. It is a great deck as is my PMD 661.
Added: I see in comments that the PMD620 offered for 49.00 has the original apparently buggy firmware. So maybe it was appropriate to lump it in with a newly released deck.Hopefully for those that ordered one on eBay, upgrading will help as apparently this original model was released before it was ready for prime time (sounds familiar
![Tongue :P](/Smileys/throwback/tongue.gif)
). FWIW, they had it figured out by the time they released the PMD620MKII.