hi!
i’ve got problem with my RB411, suddenly it lost wireless interfaces…
i’ve been running on RoS 3.30, so i’ve upgraded it ro RoS 5.5 and firmware to latest revision but with no success…
is there any way to fix it ?
http://v.urbinek.eu/urbinek/img/mikrotik/2011-06-24-224136_1680x1050_scrot.png
http://v.urbinek.eu/urbinek/img/mikrotik/rb411_supout.rif
warranty is off so i can solder it a little bit
do i need replace CPU ?
i cant find more elements that management mPCI slot
weird, sometimes after reboot (hard or soft) routerboard detects mPCI wireless card…
have you try to re-install the micipci?
maybe you can change minipci with good other.
i’m sorry before, i have no eperience about MT wireless. 
i’ve tried 2 others minipci cards with no effect
i think you need to email this problem to support@mikrotik.com
Have you tried downgrading to the previous version?
I dont know the maker of the wireless card,
maybe it has to do with compatibility with the latest version you upgraded to!
i’ve tried Tp-Link TL-WN662AG and MikroTik r52
and they work (now) on my RB532a with RoS v5.5
and i’ve tested it first on RoS v3.30 then v4.17 and now v5.5
try to change the power supply and check again.
make one support file when it is detected and one when it isn’t detected after reboot. Send both files to support@mikrotik.com
i’ve tried on 12V/1A and 24V/0,75A (both tested on rb532a)
one support file without wlan is linked in first post, rest i’ll try to catch..