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I wanted to post this for a second opinion. A friend very knowledgeable in 4-20ma circuitry recommended this connection. He is not familiar with this HAT and was providing instructions over the phone. I was expecting to wire directly from the hat to the sensor without going to the power...

Just a follow up. I received my replacement multi io card today and connected to the power supply exactly as the old card. This cards starts up perfectly!. Thanks again and excited to get moving on my project.

Will do. I have ordered another board directly from your site.

I finally had time to get back to this project. I tested the power supply and confirmed 24v. Next i put power to the board with correct polarity. Still nothing. I am going to start a return. The purchase was through an amazon store.

I have a new Multi-IO 8-Layer Stackable HAT for Raspberry Pi 5 and a new 24vdc power supply. After assembly and adding power to the hat, there is no activity on the board or pi. Questions: 1. Is there a led on the hat that should show power is connected? 2. I understood the manual to say...