Part Number: TIDA-00951
Hello, I have just made a TIDA-00951 board in few days and try to do some experiment now. However, before I started my experiment, I found that the J6 (aux_LV_12V) did not work in a expected condition.
I set my DC power supply to 12V, turn off and connected to the J6 connector. Then I turn on the power supply, but the voltage shows on the digital screen of my DC power supply was only 4.2V (The power supply is not broken I promise). And I feel the position near the T4 transformer became hot. I have checked several components nearby but didn't find the problem. I thought there should be somewhere short in the circuit and the 4.2V was the voltage of D4.(a 5.1V Zener diode)
So, I'd like to ask if you may have some suggestion to deal with this kind of issue. Or what may cause the issue in your experience and opinion.
By the way, when I turn on the 12V power supply (connect to J6), all the other connector are not connected, including the TIDA-01281 port. I was trying to use a F28379D DSP to replace it (I thought that should be ok), but I didn't connected it to the J5 connector when I test the Aux_LV_12V port.