Nope, I was never offered any compensation inflight when I told the FAs of the problem. On my last flight, the FA loaned me a clip-on reading light, since the light at my seat wasn't working. On one of my MSP-NRT flights (on a 742) on which my audio connection wasn't working, I asked the FA if I could move to seat 43G, which is normally reserved for crew, just for the duration of the movie (2 hours). She emphatically told me no, because those seats were reserved for crew. No crew member ever sat there during the whole flight, however. (I was in 44J and could see clearly that 43G was empty throughout the flight.) In fact, on all my 742 flights, I have never seen any crew actually using those seats.

I do know from a different experience on a domestic NW flight that FAs have access to bonus mile coupons onboard, which they can hand out to passengers in flight. (Unless my experience was unusual.) It would have been nice if any of the FAs on my Pacific flights had given me such a coupon. Maybe the reason that they didn't was that entire sections of the plane (and dozens of passengers) were affected by the equipment failures, and they may not have had enough coupons for everyone.