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Hi,
1. I would check first the voltage at the 5V rail (GPIO pins 2 or 4 for 5V and pin 6 for ground). If that drops below 5V, you need an other power supply. I came across a Chinese copy of a PSP power supply that was rated 5V2A but after testing it, I found out that it can only deliver about 450mA (0.45A). That power supply did have voltage of 5.12V at the 5V rail but my OPI stopped with the system LEDs off and the LAN LEDs on.
2. If you have a TTL to usb adapter, do you get any output at at UART port?
3. An other problem is how the images is written on the µSD card. You have to follow the instructions of the creator of the image. I came across problems here if I did not follow the instructions. |
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