The blind kill at connect still left a real 7760 streaming — the selector
byte differs by model, and the result was discarded so a quiet failure looked
like a cure. Both forms go out now (a NAK costs one frame) and the outcomes
are logged. The power table also gains its third measured anchor: a real
200 W reads full deflection, so raw 213 is 200 W — not the printed face's
250.