So I have this board, that has been working perfectly for 1½ year. Then I decided to sell it. I swapped the noctua low noise fans with the original ones, which I knew did work prior to installing noctuas. The seller had upgraded the firmware to the current, and now the fans dont spin at all, causing the 100c boot loop.
I got the router back, and tried some netinstall with different versions, none make the fan spin. Sometimes it registers 0-386rpm mode, and bounces back and forth 0-386 rpm in the readout only, still no fans spinning.
The voltage readout says 23.7v, so It can’t be the psu.
Any thoughts?
My voltmeter says 0v on all pins at cpu temp 67c. (My desktop pc reads 6v).
Average mA is 1200-1500, what is the normal?
(And yes, I received the same board back)
#Edit, does anyone know the estimated repair $, if sent back for a board replacement?
Don’t dismiss a PSU fault unless you’ve swapped it out. When the caps in the PSU go bad there can be high ripple on the power line causing unstable operation.
Yes, also. The capacitors gradually dry out, which means they lose their capacity = filtering capability, so the AC component of the voltage slowly grows until it is to high for the electronics to work properly.
I installed the new PSU, the problems is the same. Installed a DC-DC converter, feed is straight from the oem psu while keeping the pwn signal onboard. Set the converter to 8v, which runs the fans at 5500rpm. This way, the box Works Again. And I Integrated the dc-dc converter into the box, so it’s hard to see or feel any difference.
I guess there’s some circut failure to the fan-pins, either that or some part of the software forgets to open the voltage. I hardly thinks it’s the last part. Already did many netinstalls, and tried different versions.
I can’t help Wonder, what happend. It was in service 1½ year, then switched off, sent to new customer, the customer updated the firmware, and all of’a sudden the device wouldn’t rotate the fans, until now.