I buy broken DX7's and restore them back to 'as good as possible', I've seen some DX7's that still worked but didn't have a lick of paint on them from all the throwing around. They're built like tanks.
Very much so, the build quality is amazing. I sold my late dad's 1983/4 DX7 MK1 in 2014 to someone who is now a pal - it was gigged for something like 20 year, more than once a week and all it needed was a new battery.
I buy broken DX7's and restore them back to 'as good as possible', I've seen some DX7's that still worked but didn't have a lick of paint on them from all the throwing around. They're built like tanks.