My TV does not start but the LED flashes in a particular sequence

The tube appears to start for a split-second three times.
Then the LED flashes twice
then a pause
then the LED flashes seven times
then a pause
Then the LED flashes twice
then a pause
then the LED flashes seven times
then a pause
Then the LED flashes twice
then a pause
then the LED flashes seven times
then the TV goes into standby mode.