Error message
"(8) INITIAL keep off all the controls "
"SY-PANEL communication stop"

I've replaced the NVRAM with a new old stock one but still no fix. I tested the internal battery of the old RAM and it tested fine, so it's not the NVRAM.

Does this BVH-2000 have the TBC kit? slot 1 AU-27 slot 2 AE-03 slot 3 EQ-02 slot 4 DM-25 slot 5 MD-14 slot 6 AD-20 slot 7 MY-21 slot 8 SX-1X (Label torn) slot 9 PR-64 slot 10 LG-02 slot 11 TC slot 12 SY-79 slot 13 SY-80 slot 14 SV-43 slot 15 RL-12 slot 16 CD-17 slot 17 SR-15 slot 18 DT-04