It doesn't look like it is useful for you, but amazon has several adapters that up the DC voltage so the TVs work. I use this 32 inch Samsung with adapter.
https://www.amazon.com/gp/product/B00TWFHCLE/ref=oh_aui_search_detailpage?ie=UTF8&psc=1https://www.amazon.com/gp/product/B00TWFHCLE/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
This adapter from 12 to 19 volts. I had to get them to ship me additional ends.
https://www.amazon.com/gp/product/B00NCNDST2/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1https://www.amazon.com/gp/product/B00NCNDST2/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1