There is a solid black 3" bar on bottom of screen. Where do I get service for this TV and what would it cost to fix it?

Vertical scan output section circuit should be checked. Contact any service technician.

Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

buy a new set as part needed alone will cost more than the new set will.

The red stand by indicates the set is in PC stand by the blinking orange timer is indicating the timer has been set or has an issue

yes humidity has been known to make the panel seperate. I live in south tx and work for sony, alot of panels that show that prob is usually the panel seperating. wouldnt recomend to fix to costly around 85% the cost of when you bought it.

panel is done. economical to repair. new panel is about 90 percent the cost of the tv new

All plasma an lcd tvs have boards that control vertical and horizontal output to their respective areas. They are connected to the screen by ribbon cables. If one of these boards fails all together, has a failed chip, a bad connection, or a bad ground somewhere it will result in a black line in the area of that board. A bad ribbon cable connection on the bottom will result in a vertical black bar though the screen. Many times reseating the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They can sometimes be fixed, but it is a pain. An yes I have done it, and the bar is gone. The same will happen if the chip that outputs to that area opens. The connectors are the first place to look paying close attention to the cable, they are extremely delicate so great care must be taken if you decide to tinker with em, the usually have lift locks that release them, but it is very easy to wreck em. Good luck.

If the TV cost to much to repair, would you be willing to sell it for parts? My front glass screen has got a chip in it. Cant see paying 500 just to have a new one installed.
Thanks