As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCP CONTROL PANEL LIGHTS VERY DIM. GROUNDED - YES. VERIFIED DEFECT ALL MODE SELECT ON MCP ARE STUCK IN DIM POSITION RLS OPS NML. REMOVED AND REPLACED MCP REF B737-800 AMM 22-11-34, LRU REPLACEMENT TEST PASSED. REF L/P 60199146 FOR DOWNGRADE.