Two defective pieces in a row - unreasonable to demand refund?

It will work out OP. That is saying something though about Mac. This summer will be 50 years with Mac.. I've always loved them.. 25 pieces at my home. 20 are vintage. They hold there value well. IF you figure out a good Mac como, it is just like any other.. When they are right they are right. 

Honestly though, put that "if it's dead again" jingle in his head though..
It wouldn't leave his store without a test drive.. No ifs ands or buts...
Carma DUDE!!! If you smash your finger "Things come in threes" will be out of the way, at least. :-)

Might take your mind off the thoughts about kicking a toad or something...

I been waiting on a phono/tape pre sense November 19, 2020. and still have 2-3 months to go.. YUP...

Time to feed the chickens...

Regards

Forget the first unit it was a cosmetic issue? I've NEVER seen a Mac with a factory packing and then have issues, it wasn't new. OR someone took it out of the box and didn't repack it right. That did happen to me.. a tube got loose, oh yea flipped the box, crushed a tube box (suppose to be in a wrap under the cage). The seller forgot a simple bag or to TAPE the tube boxes shut. The unit was never removed from the box. Then the seller took it out to show the NEW 15 year old unit tubes in and took pictures.. HE repacked it incorrectly, 1300.00 mistake.  Glass scratched the tops of the transformers. 

The second one might just be the power on and reset by holding the power button. That usually resets the newer Macs.
More than one fuse?
A wire came off or loose behind transport.. RARE!

I'd open it there, test it there, and REPACK it correctly there.

If there is any problems, tell the seller before hand.. ANY problems, best have your money ready.. OR give it back RIGHT NOW, and don't worry about a third one.. Let him take the effort to make it right, NOT YOU!!!

This aught to get at least a goodie or something..

Regards