I think it is since it goes bonkers whether I use my Azbox Ultra or my TBS6922SE. Every once in a while the limits settings change and sometimes the PowerTech Gbox will slam against the limits before returning to the sat that I selected. It happens with either receiver. I have a Powermax Vbox-X laying around doing nothing so I guess I'll give it a try. Hopefully, the Gbox will be a simple repair.