I've been using an ASI2600 for just over a year. A few days ago, it was noticed that there were black horizontal lines on short exposure images. They were random and intermittent. Now the camera has suddenly stopped downloading images. The camera connects, and the cooler shows its active and cooling. In sequence generator after the exposure is complete, the "downloading image" message appears for minutes eventually timing out. When connected to ASIStudio, the camera starts exposing for about .5sec followed by a "exposure failed" message. Have swapped tried different computer, swapped USB cables, and checked the 12V level.
Any ideas on what to check next?