If you lost the turntable or roller ring, the manual lists these part numbers:
: Wipe the walls regularly with a soft damp cloth. If using oven cleaner, spray it onto a cloth first rather than directly onto the walls to avoid damaging electrical components [5, 8]. Panasonic Nn-sv30 Manual
A: That is the Inverter . It runs the magnetron continuously at a lower amplitude rather than cycling on/off. A soft hum is normal. A loud rattling or grinding is not. If you lost the turntable or roller ring,
A Comprehensive Guide for Your Panasonic NN-SV30 Microwave Oven Panasonic Nn-sv30 Manual
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