I had this issue on my Foo Fighters. Are any of your GI lights outs? Mine ended up being a bad connection one of the white GI lights. Some people have found globs of solder in the bottom on their bayonet sockets causing the error, some found it was the bulb itself. I ended up pulling all of the lights from the 214 run and putting them back in one at a time and playing a few games until I found the one that was the problem.
Quoted from Gubbin:I've seen a few people with this issue but haven't seen a resolution. I have a tech alert. Node board 9 over current. I can go into the test and it clears. Only to return again. This is my 4th modern stern and never really had to do any troubleshooting so I guess I been lucky.