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Re: Small questions that don't fit anywhere

961 by Teacher's Pet


Sorry for the crap photo. This is my MIM Fender Jazz bass circa 1994.
I opened it up (first time ever, I think) because the signal was quiet/intermittent.

Both tip & sleeve are disconnected but I can only see one loose wire.
I'm not sure where to attach that loose white wire (the white one) -- tip or sleeve?

And I can't find any other loose wire.
In the past when I've opened up guitars it's been pretty obvious what has come loose and where it needs to be reconnected but this one has me stumped.
Any tips?

Re: Small questions that don't fit anywhere

964 by VaticanShotglass
About to wire up a two single coil, master volume, master tone set up with a three way pickup toggle in my old strat. The two pots have DPDT push/pull switches. Figured I'd use one (vol) as a series/parallel switch and the other (tone) as an in/out of phase switch. Why not, they are there from a previous arrangement.

The thing is I can't recall what to do about the pickup having three conductor wires (+, -, and stranded shield wire) and a metal pickup ring. I've never messed around with a single coil like that. I can't remember if just wiring the shield wire to the negative wire will cause problems or not.

The are GFS Surf 90s. These guys:
Image


They have leads like the Mean/Dream 90s in this diagram.

Ignoring the kill switch, my hand drawn diagram looks pretty much like this Duo Sonic diagram below (article here). My question is, what do I do with the shield wire on my pickups?
Image

Re: Small questions that don't fit anywhere

965 by TylerDeadPine
Dr Tony Balls wrote: Thu Oct 27, 2022 9:10 am I agree with both answers, FWIW. The fuse is there to protect the big stuff from getting killed due to a failure. So something has gone wrong and you need to figure out what it is. This will mean replacing the fuse and attempting to turn it back on, but with parts removed to try and trace out what the problem is/was. This would, *generally*, mean removing all of the tubes and turn it back on. If the fuse pops, its something internal that has failed, if it doesnt it was a bad tube that caused the fuse to blow initially. Start reinserting preamp tubes and turning it on to see if the fuse blows. If you get all the way through that, start inserting power tubes (in pairs, into the correct sockets) and testing till you find what makes the fuse blow.

This method will likely result in one going through more fuses than they need to. For repeated use without wasting fuses, use a lightbulb limiter to show when the amp is drawing too much current. Google it to build one, very easy.

Also Tyler's point about which fuse will help to further isolate the problem area!
Lightbulb limiter is great! I was going to recommend it but thought I was going too far. Also to Tony's point - when putting the tubes back in, inserting the preamp tubes first is a good idea! Generally the first tube will have a sizeable enough resistor on it that you won't be surprised by a loud pop/arc. I've scared the crap out of myself putting power tubes back into an amp I just tested where the caps didn't have a discharge path to ground until I put the power tube back in...

Re: Small questions that don't fit anywhere

967 by VaticanShotglass
MoreSpaceEcho wrote: Sun Oct 30, 2022 9:25 am
VaticanShotglass wrote: Sat Oct 29, 2022 3:34 pm My question is, what do I do with the shield wire on my pickups?
I'm THEE LAST person who should be answering this, but don't you just ground those to the volume pot?
That is the norm for standard wiring. I think you have to do something special for series/parallel like in a tele 4-way switch mod. I'm just rusty and too tired to trust my own judgement.

Re: Small questions that don't fit anywhere

969 by Teacher's Pet
I got another easy one for y'all.



This one needs a new jack -- Do I need a TRS jack?
And a 1/4" TRS cable to connect to the amp?

If memory serves, I assumed it would need a TS jack and when I opened it up it was a little more complex. (Is that because of the LED?)

There's an Orange combo and an Orange head in the practice space. I don't have model numbers but hopefully it would work for both?

Re: Small questions that don't fit anywhere

970 by VaticanShotglass
Dr Tony Balls wrote: Sun Oct 30, 2022 1:06 pm Shield is always grounded. There may be other wires that need to be grounded depending on the pickup or wiring config but the shield is always a grounded shield around the signal wires to prevent interference.
Yes! Thank you. You have to toy with the pos and neg leads for the mod switches, but the shield/pickup cover need to stay grounded. Hence you might have to modify your tele neck pickup if you want series/parallel switching as in this article. I don't have to worry about that since the GFS pickups come with three wires already.
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