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Pickup Wiring help: Neck works, bridge works, no sound in middle position??


Somnospeed

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Anyone know what may be causing an issue where neck works, bridge works, but zero sound in the middle position. Bad switch? Improper wiring? I mean there just can't be that many reasons for this issue but I've been working on this 3 hours now and nothing. ANY help is appreciated. Can we please start with simply telling me all the ways that this problem could even happen?? I work better when I understand the why before I try the how. Thanks!

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13 minutes ago, Somnospeed said:

both Volumes are at 10

Ok you may have a broken wire if you say in the T or the R position the individual pups work. Could be a bad solder joint. The jack has to be okay if any pup works. The switch is common to both pups in the middle position. A ground maybe, but not usually, a loose or bad ground makes god awful hum until you touch the strings and complete the circuit. Its been years since I had an electric, but I am an electrician and sometimes spent hours on an electric guitar problem. Do you have a multi meter?

Edited by Sgt. Pepper
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SGT Pepper's hypothesis could be evaluated by a good look inside the larger (4 screw) back cavity, and examining the wires and soldering at the four pots. 

mihcmac read my mind.
I was going to suggest taking off the small round (3 screw) back cover and spritzing some DeOxit into that switch, and working it back and forth for a few seconds. 

😐

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11 minutes ago, Somnospeed said:

Fixed! Was a poorly manufactured selector switch.  It was not making proper contact in the middle position. Squeezed it. Fixed it. lol

 

Nice find. I'm not a Sgt and didn't play one on TV, but I am a real electrician.

Edited by Sgt. Pepper
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Somnospeed, I was going to suggest the middle position contact of the switch or a wire in that position as the cause while reading your initial post, but as usual, the folks on here bring a wealth of knowledge to solve problems like this.  Glad you were able to correct it for no cash outlay either. 

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