Antwoord op "Mackie HR824 Auto Power fail or fail to power on."I'm having the same sort of problem. Pre 2001 HR824s. Funny thing is both have developed the problem at about the same time. I've never used the auto-on function, just powered up the speakers from the front switch. I intermittently lose the woofer- sometimes works for a bit then fades- sometimes if I crank the input it'll return for a bit. Now on one of them, sometimes it doesn't power on at all..... but then may intermittently come back on (though the woofer seems permanently out on that one). If I work the auto-on switch back and forth it's really crackly, and I suspect its that switch that's shot. Brian, does the service bulletin you mentioned cover a fix for that? If so, would you send it to me? Many thanks- I need my monitors back!