The vcr says eject when I turn on the tv then in shuts off the tv every time

The loading sensor is detecting by itself as the optocoupler may be defective. Hence the mode is shifting to loading and sicne tthe action is nott completing due to the lock in the mechanism the motor is made to work without completion of the mode. Hence and errror goes out to the processor to confirm an incomplete process tto shut off the VCR/Tv combine. You will have to disengage the IR detector to stop the motor to run so as to confirm before replacing. The mode must be brought to rest and the TV will power on and stay. You can now change the sensor. Also make sure if the mechansim has not shifted in alignment as this also is a possible fault with the same result. Hope this helps. Good day