The balance wheel would not turn

Question

Thanks for your great advice. I could turn the balance wheel manually after spraying WD40 onto the moving parts inside thanks to your tip. Now, when I press the foot pressor (?) to start the machine, it makes a buzzing motor sound but the balance wheel would not turn on its own. I tried several times and I had to quit when I saw smoke coming out of the machine. Do you think it is time for me to buy a new sewing machine or is there anything I can try?Thanks alot.Tomorrow