Re: neck pickup squeals when i put my fingers near it
Posted: Thu Apr 25, 2024 11:26 am
yes i have a small copper wire going from the brass shielding to the bridge thimbles
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To be clear, you apply shielding to the vibrato cavity itself? The mind boggles - why not just run the shielding wire wedged under the tailpiece like the factory did? There are no components in there to be effected by EMI.
Wait. Can you take a close up but non-blurry (still) photo showing the wiring connections of the 3-way switch? It looks a right mess but very difficult to see in the video and 'pausing' it blurs the picture.Lobsterdeth wrote: ↑Tue Apr 23, 2024 8:07 amgood news everyone after taking out the brass shielding, redoing the soldering, wax potting the pickups, and switching out the pots now both pickups squeal like hell without needing me to put my fingers near them
yay
https://imgur.com/a/fg2VZdT
There's 'overboard' and there's 'things that actually make a practical difference'. Fender themselves did/do it this way in many cases.alexpigment wrote: ↑Thu Apr 25, 2024 9:09 amGrounding the trem ensures that there's always a ground to the strings. Some would probably say this is a bit overboard - and in most cases it is - but I think here on the forum we're specifically dealing with outlier cases a higher percentage of the time
You know... I honestly actually started thinking about that before after I posted that reply... I think I saw it somewhere and just kinda ran with it.
To be clear, I just meant because of the potential work and/or jank factor. Getting a long drill bit to go through at the correct angle angle can be a bit tricky, and running a wire over the body can be a bit odd looking. I've got exactly 1 offset that needed grounding at the trem, and the other 5 are fine being grounded at the bridge post. I personally went with the jazz bass grounding strip aesthetic as a quick fix, and it looks fine to me, so it stayed.andy_tchp wrote: ↑Thu Apr 25, 2024 6:33 pmThere's 'overboard' and there's 'things that actually make a practical difference'. Fender themselves did/do it this way in many cases.alexpigment wrote: ↑Thu Apr 25, 2024 9:09 amGrounding the trem ensures that there's always a ground to the strings. Some would probably say this is a bit overboard - and in most cases it is - but I think here on the forum we're specifically dealing with outlier cases a higher percentage of the time
here is the requested photo, hope it's clear enough:andy_tchp wrote: ↑Thu Apr 25, 2024 6:33 pmWait. Can you take a close up but non-blurry (still) photo showing the wiring connections of the 3-way switch? It looks a right mess but very difficult to see in the video and 'pausing' it blurs the picture.
I can vaguely make out what looks like strands of wire splayed out from the ground terminal but very difficult to see.
Also what appears to be the bridge pickup ground wire is just sitting there not actually connected to anything?
Lobsterdeth wrote: ↑Wed Jan 24, 2024 7:47 pmyes i know single coils hum when you put your hands near them
I don't think it's overboard at all personally - it's just good practice because you're removing another potential problem and as we all know, guitars and pedals and amps have enough of their own as it is, so anything that works to prevent it in the first place is a smart move. My Jag grounds via the volume pot and then the volume pot grounds to the vibrato plate and combined with a bridge humbucker in the form of a Hot Rail, it tends to be silent with no hum even with a lot of gain going. Usually any noise is coming from everything else (wireless kits often adds high band hiss as mine does, certain reverb pans in amps can induce slight but noticeable mains hum when cranked) while the guitar is solid. Never had a Seymour Duncan pickup that introduces problems when fitted, they're never microphonic and most of them sound great so that's why I tend to use them.alexpigment wrote: ↑Thu Apr 25, 2024 9:09 amGrounding the trem ensures that there's always a ground to the strings. Some would probably say this is a bit overboard - and in most cases it is - but I think here on the forum we're specifically dealing with outlier cases a higher percentage of the time
Lobsterdeth wrote: ↑Fri Apr 26, 2024 3:23 amand i include some extra shots in case anything seems out of place too:
I own one, but don’t use it anymore. It introduces weird sort of slapback delay artifacts, especially on the 2nd mode (more hum suppression mode). This may not be as obvious when playing clean, but once you add OD, you hear it. No clue how it works on 50hz power, but I don’t think it really is specific to that sort of hum. It seems to filter out generic EMI (e.g. dimmer switch noise, etc).crazyzeke wrote: ↑Fri Apr 26, 2024 4:13 amMaybe not these days... I don't have one but this could work well :-
I'm curious to see if it's 60 cycle only, or if there's a DIP switch inside that can toggle for 50 cycle as well, or better still if the pedal is smart enough in terms of circuitry to just do both regardless - looks like it covers 40Hz-60Hz from the spec but real-world usage versus what a sheet says eh.
Anyone got one? YouTube reviews only take you so far.
I would solder the pickup direct to the output jack (the latter completely separated from the pickguard). To see if you can get it to function OK on its own. If so, you could then start adding bits back in until the problem is triggered again (or not).Lobsterdeth wrote: ↑Fri Apr 26, 2024 3:23 am...
when i removed the wire that was "grounding" the input sleeve to the back of the tone pot, which in turn was the last update, it made the squealing go away but replaced it with really loud hum
hope somebody can help me out here!!!!!
Some of the weird noises in the videos kinda remind me of what happens when you plug a wah pedal in backwards (think the bird noises in Pink Floyd's Echoes). Something's weird electrically and it's not anywhere near 60Hz (which I believe is what Mexico's AC cycle is) or a harmonic thereof.timtam wrote: ↑Fri Apr 26, 2024 6:27 amI would solder the pickup direct to the output jack (the latter completely separated from the pickguard). To see if you can get it to function OK on its own. If so, you could then start adding bits back in until the problem is triggered again (or not).Lobsterdeth wrote: ↑Fri Apr 26, 2024 3:23 am...
when i removed the wire that was "grounding" the input sleeve to the back of the tone pot, which in turn was the last update, it made the squealing go away but replaced it with really loud hum
hope somebody can help me out here!!!!!
the hum honestly gets just the tiniest bit better when i finally assemble everything together, i made a recording of the three positions and the hum (and you can hear a bit of the middle position squeal too) that i'm getting through a pignose 1x12 and marshall-in-a-box pedal (i never play with no gain my "clean" tone is mascis style i.e. always overdriven)andy_tchp wrote: ↑Fri Apr 26, 2024 4:53 pmOK thanks for that. 3-way terminals look 'fine'. A (possibly) dumb question to follow:
Does this persist when you re-assemble everything fully, including tightening the pickguard screws down?
The circuit (especially the grounding scheme) is not complete until the shielding on the pickguard connects to the shielding in the cavities (in this case via the thimble wire, that must also have a solid connection to the cavity shielding tub).
In short: 'Ground is ground', but all ground points must have continuity with each other to the ground on the output jack. When they don't, ungrounded shielding tends to achieve opposite of the desired effect and works more like an antenna to introduce noise into the signal.
EDIT: I know Fender did this ex-factory, but I really don't love soldering to shielding tubs. These joints to the shielding you have are definitely 'good' and form a solid mechanical connection? You should be able to pull firmly on those leads and have the body of the guitar move when you try it.
YMMV but I prefer to take the pickup ground wire and twist most of the length together with the pickup 'hot' wire (doing so can also provide a modest rejection of interference/noise) and then solder both pickup ground wires to the nice big ground terminal on the 3-way switch instead. It's a better thing to solder to and tidies up the lead dress inside the guitar substantially (4 wires as 2 x twisted pairs routed to the same switch).
No, I never ground it that way; the 3-way switch is grounded through the pickguard shielding so a separate ground wire is unnecessary.Lobsterdeth wrote: ↑Fri Apr 26, 2024 5:23 pmdo you still leave the 3-way switch ground wired to the shielding tub? because i might just try that