I have a circuit board that doesn't boot up. After probing the VCC pin of the BOOT ROM, I found out it wasn't getting enough power on 3.3V, but only got 0.850V. I traced that pin back to the component responsible for providing 3.3V which is marked in the picture below:
I have 2 questions:
- What is the name of that component so I can replace it?
- You can see that component gets 3.5V as an input, and it outputs 0.850V. Is there any chance that some other component is the cause of this output, or its 100% certain that this component is responsible for this low voltage?
In the image below, the 3rd pin from the left of the white connector, is getting 3.5V straight from the power supply block, and then, that 3rd pin is connected directly to that component as an input giving it 3.5V as well.
After probing around, I came to the conclusion that that component should have the same voltage at both of its sides. So it would be +3.5V at both sides instead of 3.5V at one side and 3.3V at the other.