I was working on Digilent Zybo Z7. While trying UART-to-USB cable on PMOD pins, I noticed that the board was hot and also smelly. Probably it was due to cheap cable or the fact that I connected 5V pin of cable to 3.3V PMOD pin. There was no immediate reaction after connecting the cable but I left the board on its own some time. After I noticed I closed the board from switch but the power led was on. I took the UART-to-USB cable out. There is no sign of burn in the components. Now, the power led does not get on. USB cable, which I was also for programming FPGA, is workin since I tried it with another board. I tried the programming cable with another computer port. I can see the connection in the Device Manager, communication points. When I click "Open Target" in the Vivado, it says "
[Labtools 27-2269] No devices detected on target
Check cable connectivity and that the target board is powered up then
use the disconnect_hw_server and connect_hw_server to re-register this hardware target."
When I shutdown the board, Vivado says " [Labtoolstcl 44-513] HW Target shutdown. Closing target:". As far as I understand, the board is working to some extent but Vivado cannot reach FPGA. Device count is 0 in the Hardware Target Properties. My Vivado version is 2019.1. I also tried with the external 5V 3A adaptor with correct jumper configuration, but no improvement. Following suggestions in the
I measured the mentioned capacitances.
C219, C220, C221, C222 are approximately 5V when powered with USB, approximately 5.3V when powered with external adaptor. C228 and C229 are 3.26V in both case. C237 is 1.33V, C240 is 1.78V in both case. Hopefully, I mesured correct capacitances, see image in the attachments. Currently, I cannot see any led "on" and cannot program FPGA.
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Serdar Unal
Hello,
I was working on Digilent Zybo Z7. While trying UART-to-USB cable on PMOD pins, I noticed that the board was hot and also smelly. Probably it was due to cheap cable or the fact that I connected 5V pin of cable to 3.3V PMOD pin. There was no immediate reaction after connecting the cable but I left the board on its own some time. After I noticed I closed the board from switch but the power led was on. I took the UART-to-USB cable out. There is no sign of burn in the components. Now, the power led does not get on. USB cable, which I was also for programming FPGA, is workin since I tried it with another board. I tried the programming cable with another computer port. I can see the connection in the Device Manager, communication points. When I click "Open Target" in the Vivado, it says "
[Labtools 27-2269] No devices detected on target
Check cable connectivity and that the target board is powered up then
use the disconnect_hw_server and connect_hw_server to re-register this hardware target."
When I shutdown the board, Vivado says " [Labtoolstcl 44-513] HW Target shutdown. Closing target:". As far as I understand, the board is working to some extent but Vivado cannot reach FPGA. Device count is 0 in the Hardware Target Properties. My Vivado version is 2019.1. I also tried with the external 5V 3A adaptor with correct jumper configuration, but no improvement. Following suggestions in the
I measured the mentioned capacitances.
C219, C220, C221, C222 are approximately 5V when powered with USB, approximately 5.3V when powered with external adaptor. C228 and C229 are 3.26V in both case. C237 is 1.33V, C240 is 1.78V in both case. Hopefully, I mesured correct capacitances, see image in the attachments. Currently, I cannot see any led "on" and cannot program FPGA.
Can you help me?
--Edit: Line in the image is irrelevant
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