The problem is no new growth at all. No new leaves nothing. Where stem lost all leaves are now dead.

I am at a loss of what to do. I have done what I can but I think there was a royal screw up by the nursery when they repotted the plant for me as it needed to be repotted as it originally looked under watered and new dropped fruit though green and black were dry stressed.

I moved to light watering and heavy misting as it is an indoor only plant. The temps range in winter indoors from 60° to 80° depending on weather. Colder when there is heavy ice and snow and warmer when blue skies.

need help please!!

You say you have stem death after the leaves drop? A sign of poor root function.
If the roots breath too, you will see your plant react for the better, quickly.
Who knows how that tree was treated right before you bought it. Please make sure roots are ok..I usually do this before I even bring one home.It will save you alot of aggrivation and wasted time trying to figure a problem, when it is as easy as knowing the roots health first.

Can you give it outdoor sunlight at this time of year by day? I would. The most sunniest spot. Citrus seem to heal all ailments with full sun pretty quickly..

In short, check roots, change the soiless mix immediately, provide lots more sunlight, do not feed, do not overwater.
Give it as much as humidity as you can until the roots provide the leaves the moisture once again. I like to stick mine in the shower, let the hot water steam the bathroom, and let it rest in there at nights while door is shut until morning, until I see improvement.

Dead stems and branches almost always= poor root function, or root rot..:-(

These steps I shared have always saved me a many trees:-)

Goodluck!

Is the HPS at 600 enough not enough? I want to use it because it has better spectrum. But I have debated it for a while to decide what is best. Do not want to get something that is wrong. The nursery here is not worth spit so no help from the so called experts locally.

The only lights that I am familar with are Halide bulbs, sodium and metal. Also compact florescent ones. They have always worked well for me..

Give it a shot, unless someone here knows more..

Goodluck!

Mike;-)