I received a Harley Benton PB-50 for Christmas, and I'm really enjoying it.
I have noticed what may be a small fault in the wood on the edge of the fretboard, so I emailed photos and my concerns to Thomann. Thomann responded that they were confident that it was not a problem, but they offered me a £20 goodwill discount. I asked if my warranty would be affected if I accepted the discount, just incase the fault got worse. Thomann confirmed that if I accepted the discount the warranty for the possible fault would be void. I have declined the discount in favour of keeping my full warranty.
This post isn't to have a go at Thomann or Harley Benton products, its just a heads up that if you accept a discount you may be losing part of your warranty.