Once, the connector at the stb was lose. In my relative's case, the connector near the dis eas lose. Check both.
There are high tech homes in Pune. Centrally air conditioned, wi-fi, remote switching of appliances and the whole lot with bells and whistles. I read in one article that the young owner couple do not allow their servant maid to touch or dust these central automation console or the automatic curtains. Their life becomes unmnageable if these are disturbed.
So I conclude that servant maid has touched Kumar's stb.
Kumar both Signal quality and strength are O?