Panasonic SW-9576 failures

[qanda]This thread is about the Panasonic SW-9576. Click here to see full specs[/qanda]I’m new, but I did searches on SW-9576 & 9576 before posting this so I hope I have not duplicated.

I’m trying to get to the bottom of a series of 9576 failures.

All drives used exclusively on DVD-RAM cartridges, all using UDF with WriteDVD.

Has anyone else had drives fail well before the time you tink they would?

Any thoughts/experience.