Very unlikely to work directly. The signal from the turntable's phono pickup is at a very low level and needs equalisation -- this is normally done via a regular hifi amplifier. A line level signal from the amp's tape output might then be fed to a TV or other devices.
Now that some amplifiers are appearing without a phono input there are adapters available for those who still need to connect a turntable. Visit a hifi store or Tandy/Maplins.