Broken Humbucker Diagnosis + Rewind

Chapters:
00:08: DCR Test
01:35: Continuity Test
02:11: LCR Meter Test
03:22: Tap Test
04:15: Disassembly
05:08: Online Research
05:21: Planning the Rewind
06:25: Tear Down and Rewind
08:01: Pigtails, or...Pigs in a Blanket?
09:08: Polepiece Pressing Block
09:42: Wax Bath
10:00: Cleanup and Labeling
10:16: Final Wiring and Assembly
11:25: Final Specs (DCR, pF, L, Resonant Peak)

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Complete Pickup Testing Guide:

Magnet Wire Splicing:

Complete Single Coil Pickup Building Guide:

Broken Single Coil Diagnosis Guide:

[guywhoisaguy]

I got it open, the way you said worked, took about 20 min though. When I looked at it, you were right, the wire that touches the plate was off. it separated from the other bare wire because it got soldered on top of the other solder. I stripped the wires off and soldered it next to the other and used super glue like you did, to keep it from moving. All the wiring looks original, old, dry, never moved. It used to buzz and stop sporadically but now it is quiet and sounds like the other one pretty close. Only reason I think the plate got changed is the holes on the ears were probably stripped out or broken and they want the same face screws installed. They probably disconnected that wire while removing the old plate but you can't simply solder it back to the old solder without flux, he should have simply made new ends with bare wire to solder on the new plate.
The single coil I stuffed the leads into the coil, I didn't even try because I know I broke a dozen points on that coil.
Thank you so much, I learned a lot from you and now understand a lot better. You cover every detail and now I'm ready to make my own pick ups after I gather the supplies. I'm sending anyone that asks me to your videos and Il let you know what your teaching got me when I finish my first attempt.

[DrPepperZZZ]

Thanks again for rebuilding my pickup! That's awesome you documented it here to let me and anyone else interested see the process. To anyone needing work on a pickup, Guitar MD did an excellent job for me and had my pickup shipped back to me very quickly. 100% recommended.

[theNextProject]

GREAT video!
Really like the way you show the steps and process to determine the wire, turn counts... basically how to recreate the pickup from scratch. Great tip about the cloth tape and super-gluing the pickup wire down. Well done - again!

[These_go_to_eleven_]

This was very informative! I always had thought the J90C used AWG44 like the Duncan JB and was modeled after it but it turns out it was with AWG43 like the Seymour Duncan Custom. I now kind of view this J90C as a Duncan Custom plus type of p'u. Both have the ceramic and use the AWG43 but the J90C is wound hotter at 16K whereas the Duncan Custom is at 14.5K

[irfannafiz]

Amazing video. Hope you get more recognition?

[TheGuitologist]

Great video. I'm sending you an email.

[guywhoisaguy]

Oh, the other one doesn't have vent holes drilled on the bottom plate and I can't see in it at all. But has an F stamped in it.

[jfiery]

What is the benefit to rewinding a pickup versus just replacing it?

[guywhoisaguy]

What have I got ? A double coil brass covered six. I can't remove the cover plate from the back plate, (welded) no screws.. only one green wire comes out with a bare ground wrapped around a white hot wire inside it. Only marking on the entire thing I can find is the letter R stamped into the back plate. Is there a way to open it ? From the bottom, through the ventholes I see the bob and it has two side holes and one in the middle with a little square hole to see the coil on the edge. I don't know what it is. It's humming now and I am thinking I can fill the gap in the center with candle wax because that worked before on my friends pickups that I could take apart. I have no clue.