Singer 7442 Mechanical Sewing Machine "sound bar buzzes" Questions

the noise stopped until the machine was turned off and back on. Then the noise started again. Help! Sounds like you've got a thread jam going on in the bobbin case area. Good cleaning and a new needle

...sound and all lights are flashing. With the side plate off you can see the needle position flicker but nothing happens. I can't get the lights to stop flashing and the machine to work. What do I do? ...