My Toshiba LCD TV dos not respond to remote controls and all remotes are good so what should i do .

Have you checked all the remote controls for its infra-red emission? Are you using its original remote control or a universal one?
If you're using the original remote control, it should work without any problem; provided it emits infrared light from it to each press of a button on it. You can check it using a cell phone camera. The procedure is given one among the following sites liked here. If it is a universal remote control; you have to synchronize it with your device, using the set-up codes.
Check the remote control for its infrared emission. Check it with fresh batteries. Check it by pressing all the keys. You can detect the presence of infra-red emission from the remote control, using a cell-phone camera. If you wish to get more details about how to check a remote control, please visit this site. One among the posts has details about it. Surf the site with patience.
http://electronicshelponline.blogspot.com/
In case of universal remote control:
Set-up (Programming) procedure is too much to type in here, and is not practical and it will differ brand-to-brand remote controls. If you wish to get more; check the sites linked here. It has set-up code list & set-up procedure to many popular brand remote controls. One among it has general set-up codes to check with TVs and other devices are given, in the order of the 'device's brand name list' in alphabetical order. Pull up older posts. Search the sites by type in the brand name to your device in its search box at the top right part of the display window. It will help you to find the document easily.
http://remotesearch.blogspot.com/
http://electro-medical.blogspot.com/
http://electrohelponline.blogspot.com/
Search the site by type in the brand name to your device, in the "Search box at the top right of the display window".