This is clearly a quality unit. But, don't offer their asking price. Chances are they will take less.
Working it would likely be worth >$100 but not much more given that it is only a single supply.
$30 seems like a good top price based on a maybe 50-50 chance of being able to fix it.
I'm worried about your safety.
Lets think a bit.
Its so new that the most common things which typically go wrong with used equipment (such as old electrolytic capacitors giving up the ghost)
are unlikely. Also, its such a high quality unit that its more likely than not it has internal safety features which simply turned it off when a dangerous condition was encountered.
High quality power supplies are unlikely to just burn out because of use they encounter - for example, if I short out my Sorenson power supply it just delivers its rated power and whatever is there gets hot, but teh power supply doesnt blow up. It limits the output at whatever its set to or slightly above its rated output.
Its not unlikely you will open it up to simply find a blown fuse or similar.
I'm surprised there is not a fuse visible, did you check for one?
Perhaps more likely is something like ESD damage. From a high voltage.
Here is their big catalog.
I don't speak japanese so I am basically lost - I can only guess at what they are saying.
http://www.takasago-ss.co.jp/products/catalog/pwr/PSC-2017-EX13.pdfIts also possible that it is a complex unit which they simply do not know how to use.
Suppose there is some jumper for example which turns on remote digital control is on, dis-activating the user controls?
But then i would expect some indication it was on and under computer control. A light indicating such.
Really, you need a service manual or at least somebody who speaks Japanese who can translate the catalog and make some educated guesses about what to look for.
You need at least the operators manual. Which is likely on their site soewhere.
Look for the service manual on Japanese geek sites.. which must exist in the Japanese web.
Look here at the repair section's stickies where you will find links to several web sites where there are large numbers of manuals for equipment. Also see below for a few more (there are duplicates)
http://www.eevblog.com/wiki/index.php?title=Service_manuals_and_repair_informationAnother one is electrotanya.org
if you're lucky you'll find the service manual in Japanese and it will be a PDF or something you can translate laboriously. I think thats the most optimistic scenario. Ask any Japanese friends you have if they know of any similar Japanese sites.
The very best situation would be, you get it home and its something very simple. With any complicated device, there is a small but nonzero chance that it may not even be broken. Unlikely but it happens.