Re: PS3 controller problem
The controller itself needs to be reset. Have you checked your settings and sync your controllers to the console? There is a reset button on the back of the controller, above the top right hand corner of the square with all on the information and barcode. Have you tried resetting the Nyko dongle? Press it with a sharp tipped object while still connected to the PS3 via USB cable. Then press the PS button and you should be back on wirelessly.
Re: PS3 controller problem
I did a power reset (Unplugged power cord) and started the system again then I connected one Xaxis via the USB cable checked all my settings and disabled my wireless connection. There are a couple of proven ways that work to fix your Ps3 controller problems. This repair work 90% of the time, but it might be complicated for you. My media server is wireless so I disabled it. I unplugged it (the controller) from the system and it started working. I tested all of my controllers 3 Xaxis, 2 guitars and bluetooth. All worked.
Re: PS3 controller problem
Best you can do is monitor the amount of dust there is and try to blow/wipe as much of it out as possible. You need to try another controller and if that does not work. I think you should reset the controllers, there are little pin holes in the back. Then plug in with usb, but also make sure there aren't any bluetooth enabled devices turned on.