Well I can not find what that error code signifies. I would not assume it is the receiver, but probably is. However Samsung TVs are well known for HDMI ports not following the rules. So there is a good possibility the error code relates to a communication issue. Personally my opinion is that a Samsung TV should never be purchased.
In future I would never consider such a problem prone item as receiver be purchased from an outfit like Accessories4less. It is just too risky.
The receiver I installed up in Benedict in February has had no issues. However the way it becomes a space heater when driven, made me think it would probably not have a long life unless treated very gently.
One good thing that I hope will come out of the awful tragedy of this pandemic is a return to far less dependence of Far Eastern manufacture. We need to get back to products that proudly proclaim, made in the USA, made in England, Switzerland etc. like it used to be. I try as much as I can to surround myself with equipment from that far better time. I have a lot of it in regular use and they are among my most prized possessions, especially my Quad gear. Back then any unit that failed even out of warranty was regarded as a personal failure, literally. How low we have sunk.