I've had 3 different Reverbs since 2012(ish) and IME if you get a good one you're fine but if you get a bad one, or your good one finally shits the bed, what you're experiencing is totally normal and, to me, ridiculous.
In retrospect I should have ditched mine as early as possible and I'd be waaaaaay ahead financially. Mine failed again recently, a few weeks after being rebuilt, and I finally replaced it with a PRO. Good news is that there are now reliable posts out there at $300ish so at least the retail price of these things is finally dropping.