I'm only getting a 12v off power supply no standby votager

I'm only getting a 12v off power supply no standby votager

I have a vizio Model # D24-D1 smart tv. I can’t get it to turn on. And I’m getting no power light at the bottom. I know its standby power and it should be 5v but I’m getting nothing. I can’t find whats wrong. Do you have and ideas on how to fix it. I use the tv for my monitor

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