On Monday, 7 January 2019 08:19:45 UTC, Brian Gaff wrote:
More likely a failed power supply. Its pretty crude normally. a large
transformer, some rectification block and some hv capacitors.
The problem is its a very dangerous area to work on for many reasons as a
day thing. Thousands of volts even when off and microwave leakage when on,
and really hard to get details of the circuit, at least back in the days of
yore.
Brian

Nearly all microwaves use the exact same HV circuit.
The diode is the most failure prone part of it, cheap & easy to replace. But the OP doesn't really want assistance as they've not provided the symptoms.


NT