Hi,
I have used my Asi533 mc pro for 4 years and never had a problem. Went to use it a couple of nights ago with the Asiair Pro, it started to polar align with no problems and then the camera stopped showing up as connected even though the guide camera, mount were still working. The power light glows red but the fan doesn't spin and it won't connect any more. I have changed cables, tried connecting to Asi studio and it won't show anymore and neither will the fan work. I powered it with 12 volt 10 amp and only had the guide scope connected to it. I have read some of the discussions here but nothing anyone has mentioned works. Thanks