how to diagnose an intermittent airport extreme

[whyrichard]

Hello guys,

my airport is intermittent. it cuts off, looses it's connection...

i called sbc yahoo and they did a check on the dsl, and it is supposedly fine.

i updated the firmware on the thing, firmware 5.7...

what else can i do to diagnose/treat an airport extreme that is not working properly? how do i find out if it is a hardware issue with the unit itself?

thanks,
r.