Hi,
Hopefully no one connected the turntable to the 220VAC power without an adapter which lowers the voltage to 120VAC
You may have to open the turntable and inspect it for any obvious damage, such as burnt out components, blown fuse etc.
Here’s a link to the ifixit Jensen JTA-230 guide which may be of some help in dis-assembling the turntable.
If there is nothing obvious, you may have to start doing static (power totally disconnected from the turntable) point to point testing of the power circuit using an Ohmmeter (function in a DMM - digital multimeter) to find the problem. Start where the power cord connects to the circuit board.
If you do see something and you’re not quite sure, take some close up pictures and post back here and hopefully there will be further help.
Here’s how to do this. Adding images to an existing question
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