Tplink Archer C5 v1 not starting (Hardware defect)

Hi,

bevor trashing the above router maybe someone has an idea what could be wrong with this one:
http://sebastian.oimel.net/output.gif
-All Leds are blinking periodically
-No serial output
-I don't know what happened to the device, just got it with the comment: Does not work.

What i did so far:
-Checked Diode on Power input (Ok)
-Desolder Flash, reflashed (I thought the uboot was maybe broken)
-Resoldered, same behavoiur

Maybe one of the voltage regulators, but i dont know how to test them...

Hi,

Test to make sure the voltage on your power supply is sufficient.

If that is ok, it's one of a hundred things...

LP,
Jure