Coppell TV Repair LLC offers you a replacement for back light inverter 6632L-0490A as shown on the picture and used in a number of 37'' LCD TVs from Magnavox, Vizio, Toshiba and a bunch of other LCD TV manufacturers.
The replacement may be the same or other compatible board, but in either case it will be original LG OEM product.
The same board can can also successfuly be used as a replacement backlight solution in some 32'' models as described in this article at our blog:
We - Coppell TV Repair LLC - specialize in LCD and plasma TV repairs and we have fixed hundreds if not thousands of such boards - locally and through Internet.
See the reviews for our work and check our website and our blog there for some helpful information.