I have a problem with my old RouterBoard. I have lost its original adaptor and was using another adaptor which has low voltage (5v) for a few days but the device stopped working and doesn't boot up anymore.
When I want to turn it on the led #4 light up completely and #3 is slightly on (no bootup sound or anything else). I tried different adaptors and also tried to power it on with a power supply with voltages between 8 to 30v but still it doesn't react. I searched for a long and couldn't find any solution. Is there any hope?