What resolution did you use on the monitor? The TV probably can't support a resolution that high. HDTVs generally support higher resolutions but standard TVs often run at only 800x600 or 1024x768 for TVs that are around 32" or more.
its 800x600 and its impossible to change..but it was normal the first time i used my tv, then next time i turnd it on poof all big and cant change settings from 800x600