Are there two sets of wires on the back of the master? If so, gently remove any that are connected to T3, preferably without cutting them.
Be careful not to disturb any on T2 or T5 at the moment.
If only one set, then still detach T3 if present.
See what happens then.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
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