I bought a lefty 1991 Ibanez SR800 off of ebay and it's great except for one thing: the treble pot doesn't work. And unfortunately this means, apparently, the treble is full on. I could send it back but it was a really good deal and I like it for my wear for 5 hours/back up bass (it's really light). Having talked to the local repair guy in San Rafael who works at a store that is an authorized Ibanez dealer, he found out that Ibanez no long has replacement pots (it's not just a pot, it has a small circuit board on it as my attached photo will show). Their only suggestion is to replace the whole 4 pot electronics with a newer one that has the stacked bass/treble mid/sweep that you find on newer Ibanez basses. Only drawback, the part package for the whole thing is $200 plus minimum $50 to install. That's $50 more than I paid for the whole bass! So I pulled the treble pot out, hooked up the bass to my Pandora effects box and listened at high volume as I moved the pot all the way up and down. I can hear a 'slight' change in the hiss as I do this. This leads me to believe the pot itself is working. As you can see from the photo, there are only two pieces: a resistor and a capacitor. Not a electronic genius here, but my thought is the capacitor might have failed and so no trimming of the highs is occurring. If this is the case, I would think I could just try and find a replacement capacitor and that might do the trick? Can anyone with electronics knowledge tell me I'm on target or not? I am assuming getting the capacitor on the Internet would be easy but I might be wrong as well. Thanks for any suggestions.