When cool this generator powers up with no problems but I notice when I leave it on for about an hour and the internals start to build up heat, symptoms started to occur. The A16 module was flashing on the screen transient failure and when I restarted A19 indicated a test failure. However throughout this the generator was still working. So I let everything cool down for a while and everything runs just fine again, no transient failures or any failed tests, the generator runs like new again when cooled off. Perhaps some capacitors are in question or maybe some IC's or transistors are becoming thermally unstable.
This is similar to the problems I had with a desktop video card, when it would get warm the video would go corrupt and everything would lock up. I attempted the oven trick when I reviewed that others had similar issues and it worked.