Could I have a defective 7-string blackout on my hands?

5150time

New member
Hi,

Well, it's 3:42 am and I've been trying to figure this out for almost 5 hours now, so I figure this'll be my last stop.

I've recently picked up a set of 7-string EMG-sized Duncan Blackouts to put in an Ibanez RGA427Z with a trem. I'm normally a pretty competent soldering/wiring person, but this one has me stumped.

Both Blackouts are from a set package. The neck one has no problems, and the bridge one functions, but hums with the distortion on, and can actually pick up radio stations. It is unaffected by noise gates, or anything like that, and of all the guitars I've had with Blackouts, it's the only one that's ever hummed. It's wired as 1 volume, 1 tone, which makes it all the stranger that only the bridge would have a problem. All my solder joints are intact and functional. I've tried different 3 way blade switches, to no avail. I've also tried all combinations with the bridge wire connected and disconnected, as well as rewiring the barrel jack in case I had the ring and sleeve connections backwards. I even tried blocking off the quick connect part but that's not causing the issue either.

The question here is: could the bridge be defective? I'm from Canada, and I bought it from a USA dealer, so I'm definitely going to end up burning some money on shipping here, and with the 3 week policy, I've got to send it back ASAP. Before I do this, I need to be absolutely, absolutely sure I'm not missing anything else I could do so I don't embarrass myself, the dealer, and the good reputation of Seymour Duncan.

Any thoughts on solutions I might have missed?

Thanks.
Craig.
 
Re: Could I have a defective 7-string blackout on my hands?

All I can think of is to try and wire it directly to the output jack if possible. This will eliminate all of the other components and isolate the pup. If the noise continues then its for sure a problem with the pup
 
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