HR54 cannot detect swm

Had a lightning strike hit the power pole outside and it took out some electronics. Had an HR 54 receiver that no longer turned on, no display, no power button on, no nothing. DIRECTV sent me a new HR 54 receiver and I swapped it out and I get the display but an error of cannot detect swm. I checked the cable I’ve got 20.3 V DC up at the LNB so I figure it’s probably not the cable. Figured lightning charge may have took out the LNB also so I swapped it out with a new LNB. Still same problem. I’m at a loss now…

Same model receiver just new, new LNB and a good cable and I get this problem, makes no sense! There is nothing else to check…

It’s a slimline dish and the old LNB was SL3-SWM. New LNB is Reverse Band 3 Satellite LNB (3D2RBLNB). There has never been a power inserter or any splitters cause there’s only one TV and one receiver.

The only thing that I could think of now is that the new receiver they sent me is no good??? Anyone have any ideas? Thanks!