Troubleshooting after lightning strike
A lightning strike just hit the power line which connects to my house. The RCD and fuses tripped.
I had disconnected the antennas before the storm but i left the kiwis powered on. Now there seem to be some damage on all 3 of them.
Two kiwis don't show any signs of life when i connect to power. On the 3rd kiwi, a LED on the BBG lights up.
On all 3 kiwis, the common mode choke gets very hot. The voltages after the common mode choke are 4.4V on the one where the LED still lights up. On the other two kiwis, the voltages are 3.5V and 4.4V.
I separated the BBG boards from the kiwi board. I tried to power the BBG via the micro usb connector. But nothing seems to happen, there is no current draw at all. If I understand the manual correctly, I'd have to hold down the user button while applying power.
Any tips for further diagnosis are welcome.
Edit: If I understand correctly, the BBG should be powered through the 5VE pins? They have 2-3 Ohm on the BBG input (VDD_5V) which doesn't seem right.