I have strange problem with the Shruthi - everything works fine when I plug it first, the display comes on, sound works, midi etc. After half a minute or so, the writing of the display fades out - as if I had changed the contrast. The strange thing is that the display worked fine for the past few weeks, and only a few days ago this problem had come up, after I had cleaned the boards of the residual flux.
When I unplug and plug the Shruthi again, the display doesn’t come on, it goes directly to zero contrast. If I leave it rest for a couple of minutes, the display will work again for a short time - as if something needs to “cool off” before the display can come back. I wonder if something overheats and causes the problem. I have a 12V wallwart which delivers 12V accurately, but I can also mention that the 7805 gets really hot.
Any help would be greately appreciated!