Pickup suddenly dead or short in the wiring or switch?
Ive been working in my jazzmaster because I've been getting some crazy emf and hum in all positions so I decided it needed some shielding, my 3 way switch was scratchy when selecting pickups, and as well my tone seemed to get "stuck"when once in awhile selecting different pickups ie I would have to wiggle the switch to get it to audibly sound like the pickup I was selecting.
Here is what I did before opening the guitar up and what Ive found or what has happened since opening it up.
* Before opening the guitar I did the instrument cable test for the pickups and they read 6.7 and 6.5 (right around where the pickups I have should be)
After opening
* The guitar definitely needed shielding. It only had shielding paint on the base of the guitar but the sides were covered so nothing was connected. The ground was screwed to the bridge pickup cavity then to the guard, but again none of the shielding paint was connected so I assume that did nothing?
* Had a friend (as well posted in the offset subreddit) look at some pictures to check out the solder joints as I am fairly new to DIY to see what he thought and he said that the neck pickup wires are the bobbin definitely didn't have good looking solder joints. So I reflowed them and they read perfectly after checking.
* Did the screwdriver tap test. In one switch position (I cannot remember if it was bridge or neck position) both pickups reacted to the tap test when it should have only been the one? Though the other one that shouldn't have reacted was quieter by a little bit than the other. When performing this test, I had immense buzzing. Especially when I would just move the neck pickup.
* I tried to test the 3 way switch and didn't get a 0 for continuity (my multimeter doesn't have a speaker), rather it read 6.5 for one pickup then 0 or a fluctuating number for the other.
* Tested the pickups again, only to find now that the neck pickup reads L. Thought maybe my solder failed even though after testing it numerous times it was fine? So I carefully reflowed it and tested again, nothing. I inspect the coil and the thin wire that wraps around the eyelits and it looked fine to me.
* I then tested the pickups with the instrument cable and multimeter to confirm. Again it read an L for the one pickup.
Before testing that pickup, I posted my findings about the switching again in the offset subreddit and someone said that definitely doesn't sound right they thought there's a short in the wiring or the switch.
Now my question is.. before I go buying new pickups, is it possible it's the wiring or is the pickup indeed dead? Is it possible the solder joint was so bad before that when I reflowed it, did that just make it no longer work or did I just break it?