Flaky volume controls are often the result of oxidation that builds up. I've had very good luck with Caig products. Usually Deoxit to really clean and Pro Gold to clean and protect. I think I also have some Pro Gold Deoxit Fader Lube recommended by Groomlakearea51 I think it was.
Beyond a fuse in the subwoofer though, I'm clueless. And be carefull if you don't know electronics. The power capacitors in even a modest amplifier like the iFi would have can probably still pack a pretty good punch and possibly even good old fashioned electrocution.
When using any cleaners, power off, and unplug, spray into the balky control and work it several times. Let it dry out thoroughly as the carriers in the spray are extremely flammable though do dry quickly. Then plug it in and test it out. Repeat as necessary. This can make a noise wasted sounded volume pot sound as good as new.
Caig products can be found at parts express online or I found a good supply at the "local" Fye's a little over an hour away in Indianapolis or maybe Fishers a suburb of Indianapolis Even a couple of little bottles of the liquid. Not sure if it's the pure stuff but in any case I think the sprays are like 5% solution. It's labeled Deoxit and Deoxit Gold (formerly Pro Gold?)
And if that fails. Call Klipsch support. I bought a ProMedia 2.1 from some filthy lyin cheatin' twit off eBay and it was dead on arrival. Bass drivers didn't work. I could test that the voice coils were burned out so ordered a new set, very affordable. Turned it all on and toasted one very quickly due to a loud hum. I still need to call and send the amplifier and/or subwoofer back in. It was pretty affordable back in September or October as I've still not gotten around to calling.... Next time we start with an old junk speaker....and another set of bass drivers as if I fried one the other may be all but shot unless the hum is only in one channel - I don't recall.
I now know what a fried voice coil smells like - just like what I smelled when I opened the box! And the twit tried to tell me they worked perfectly - yeah right. And wouldn't even tell me how to return them. I learned not to shop on eBay late at night as reading the description there were too many red flags. But they'll still be kick tush computer speakers when I get them repaired.
But not near as good as the iPod. Man I wish I could've afforded a set of those when they were on close out as my understanding is that they just flat out ROCK! And we won't even mention how they'll STOMP any other iPod speakers on the market. I think Klipsch introduced those too early and hope they reintroduce them after maybe making their operation a little more intuitive as I've read they are a bit quirky in their operation.
Be sure to call Klipsch support if you keep blowing fuses as that's a sign of serious issues (like hum that fries "bass"/midrange drivers).
Feel the bass in your head! Sticking 'em in my ears since November 2007! - bsam 2007 -
Klipsch - The Environmentally Friendly Speaker Company - bsam 2008 -