If the Sun is debilitated, can a Sun picture be kept in the East?
No, do not keep it and do not take on the trouble. Strengthen the West instead; its power reaches the East on its own.
Related questions
How far does the influence of a devta reach beyond its own pad?
As in a kundli, where Jupiter blesses whatever it aspects with full drishti, a devta also aspects the devta opposite it; Surya, for example, balances Varun. If you cannot balance a devta directly, balance the devta whose full drishti falls on it, and its gaze will set it right.
Should we follow the direction a planet rules or its position in the chart, for example an exalted Sun sitting in the West?
Follow the direction the planet rules: if the Sun is exalted, select the East even though it sits in the West of the chart. Also see where most benefic planets sit; two, three or even four directions can be favourable for one person.
The 5th lord is Mars but the child studies in the West. Is that wrong?
See in which direction the 5th lord sits. If it sits in the West, that is excellent; if in the East, choose the East. The East and North are best for study anyway, and if the lord sits in the South, studying in the South also works.
A client has an exalted Saturn and a debilitated Venus. Can the bedroom be made in the West?
Yes, it will be very good. With an exalted Saturn, make the bedroom in the West without hesitation; WSW or even SW can also be used, but when Saturn is exalted the West gives the best results.
Can a Moon photo be put up when the Moon and Saturn are conjunct in the chart?
No. A Moon-Saturn conjunction is not good, so do not put up a Moon photo in that case.