1) Did U Checked The Connectors From Antenna To STB @1St ?
2) LNB Intermediate Short Circuit Thatz Common Problem @D2H Or Adapter Supply @Rare Case...
Mostly Rectified... Change The LNB & Reset STB & Check Result 1St...
3) If Your Problem Unsolved Means @ Final Stage STB Swapping Only Possible From D2H Engineer Help...
Iam D2H Direct Engineer @TN-1 Circle...
& Me Too Using 2222 Box Without Any Problems Nearby 2Yrs Completed...
GoodLuck...