In line with the legendary quality of HobbyKing products, this was posted by my brother in the Qatar forum.

http://rcqatar.com/radios-and-electronics/cheap-orange-rx-from-hobbyking/

absolutely means they dont prior check them

Similar thing happened when I had bought a USB programer for HK quad board. It had a blob of solder strongly adhered to four pin of one IC. I  had to chip it with clipper and desolder remaining  stuck pieces. Now I am not sure about connecting the board to it for the fear of frying it. Went ahead and bought another one. If onlybi had noticed it in time I could have got a replacement for it.