Did you test the Limiter to see if it had failed? either on the board or by desoldering one leg? Or check it for a cold solder joint? Seems logical to suspect the component you just worked on. Also there are two other limiters on the board as well (smaller red ones).
I've seen suggested elsewhere that if the component is over heating that as a test/temporary solution you can put a piece of electrical tape over the disk and clamp it with a small binder clip to act as an additional heat sink.
I don't mean to hijack your thread but perhaps ours are similar, we can work through it together. Mine is doing the same thing and I'm pretty sure its my current limiter, so I just ordered the part.