I may have dameaged my R4 board

Official Hardware UNO Family UNO R4 WiFi
1

I had my UNO R4 board powering a GPS module via the 5 volt out pin and it seemed to be working well for several hours while I debugged the code. I went for a walk checking my location via the cloud map widget and when I got back I noticed the the GPS module was no longer powered and the R4 board's power led was varying in brightness, not actually blinking on and off but more a fast flutter.

I thought that the 5 volt battery may have been low in voltage but that proved not to be the case because the same effect occurs when the board is plugged into a USB port.

The board's rx and tx LEDs toggle back and forth at the same rate as the Arduino IDE indicates that the board is connected / not connected.

The on board reset button sometimes makes the LED marked "L" pulse slowly before the rx and tx begin blinking again.

Have I ruined the board or can it be rescued with a reset of some kind?

3

Thanks for your reply. The board is bare and not connected to anything.

I was hoping that the blinking rx and tx might indicate a fixable fault.

6

I had tried a double press on the reset button and noticed the "L" LED slowly blinking. The board wouldn't connect to the IDE.

I just tried the wretched board again and noticed that it had connected to the Internet and I was able to download some code to the board. It seems to be working again after being left aside for an hour or so. Could there be a resettable fuse on the board?

I don't know if I should try connecting the GPS module to the 5 volt pin again or not.