ICD3 inductor noise. Design flaw or feature? Maybe I'm just having bad luck?

[Arp]

I think they're going to send me a second replacement. Maybe the replacement I got was an old returned unit with the same problem. If third ICD3 fails I'll see if I can manage to put a load on it. Lowering noise floor is more important than the warranty imho . Thanks for the advice

Btw, seems like I'm not the only one with this problem. After googling I found this from 2010 that sounds related:
http://www.microchip.com/forums/m476054.aspx

[Arp]

I received a second replacement today. It's an older revision with a green PCB instead of a red. Now when Power & Active is lit it's completely silent. Only when status it lit there is a slight squirm but nothing too depriving. Reckon Microchip got a bad second batch of components?

[AndyC_772]

Resurrecting this old thread because I too now have an ICD3 that whistles. The noise comes and goes, it's not really consistent or predictable.

Anyone else got this problem? Is there a simple fix that doesn't involve sending it back to Microchip?

[Sal Ammoniac]

I have two ICD3s (both have red PCBs) and neither of them makes any noise either connected to a target or just connected to a PC's USB port.

[heize0]

Quite a long time post ago. I came into the same problem. It's quite noise. Replacing C18(below U26) with a solid-state electrical capacitor solved the problem at all and give you a quiet world.