EQ/preamp in Ibanez SR505

Anyone else have to deal with this repair on an SR505 and want to chime in? The issue used to be far more sporadic / intermittent, now it's just a mess all the time. Something is shorting or going wrong, where the bass control stops working properly, and the treble control somehow becomes both treble and master volume; and it's definitely something loose because it waffles back and forth depending how much I play it.

Thanks!