Yea, well - I'm really glad to hear you weren't blown up or anything following my half-baked advice!
Honestly, I'm not an "expert" on these things at all, but, I DO read and I try to apply what I've learned in engineering to these problems. I also never advise anyone to try anything I wouldn't try myself.
But, now I have to tell you a tiny story about how I decided something in a single-lens reflex camera I had many years ago needed cleaning. It actually did need this treatment, but in the process, I totally ruined the semi-transparent mirror this particular Canon camera had. Bottom line was a fairly large repair bill to Canon to
fix my fix! :o
So, I try to reason things out correctly - but, I'm afraid I get things wrong all the time!
And, I suspect when Bill gets a free moment or two, he'll inject his usual brilliance here to tell us what REALLY happened!
(AND - HE DID! So, did you "cold start" and slam it quickly into gear? I can't help but wonder though, why this action would put it into failsafe???)
- Jack