[Herald1360]

Jumping back a bit.... it wasn't unusual for live chassis sets to have a single pole mains switch in the neutral line or at least in the line connected to the chassis. Looking at the DAC10 circuit, though, it should have a double pole switch anyway.

Whatever the arrangement, treating the set as live unless it's physically disconnected from the mains is the only way to go.

Replacing caps I have managed without removing the tuning unit nor the tag board though maybe resistors can be more of a problem. I was also just "repairing" the set not "restoring" it so old caps were just cut out and new ones fitted to the old ones' tails.