Boss Chorus -- whistling

[PeterJ]

I have a not-so-old CE-5. It's a pretty good sounding box with a lot of control, but recently it's started making a high-priched whistle/whine. I'm using this for an acoustic instrument that goes to the soundboard.

I've tried in different places in the effects chain (currently TU-2 tuner, CE-5, mxr micro-amp, DI box to the PA), and no change. I usually power it with a One Spot, but it does the same thing on battery power. Any ideas on what could cause this?

Thanks,
Peter

[claydavis]

sounds like a bad ground, or maybe a bad cable. if you haven't swapped your cables around yet, try that. if that doesn't work, reflow the solder joints on the input and output jacks. hopefully that'll cure it.

[PeterJ]

Thanks!  I figured it was something simple. Much appreciated, Clay