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Here's the chassis on the bench. I've never worked on an M7000 before, but this is pretty typical for the era. For years, TVs were built much like radios -- wired point-to-point on a metal chassis pan. Over the years, the pan shrank, then vanished. This is right on the cusp of that era.

Left side is a big transformer, guessing this is a step-down -- the manual says it needs an isolation transformer, which was very common for monitors of the era.

Middle-right of the PCB is the high-voltage transformer, aka the flyback. Big metal canister is a multivalue B+ filter capacitor, part of the power supply.