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G&L Club Part 7

#13,904
Beersurgeon said:
Hi,

I have a G&L L-2500 tribby that is having some issues. I replaced the battery a couple days ago and since, the only way to get any volume for it is to have the bass, treble, and volume turned all the way up. I have tried different batteries and have the same issue with the batteries being brand new and full of energy. I have open her up and all the joints and connections look good. I have had some crackling from the treble pot before this occurred. I keep going to the connector for the battery being the issue.I have never had a problem with this bass until now and I need her back!!

Any ideas?
Click to expand...
I have to leave work soon and I'm not sure when I'll get back to the computer, so I'll just give you my thoughts based on what you've said already.

Your being in Denver where humidity is ~20%, my best guess is that some static electricity zapped your preamp chip when you changed the battery. Try this:

--> Take the battery out and see if you can get the bass to work with the preamp selector switch in the passive position.

--> If not, cut the white wire going to the "IN" terminal on the middle of the left edge of preamp board. You can cut the wire at any point along its length between the preamp board and the volume pot, taping the ends so they don't short out to anything else in the control cavity. The diagrams below show the wiring and the particular wire you want to cut. Try to get the bass to work with the preamp selector switch in the passive position.

If this works, then you may only need a new preamp chip. If you or a buddy is handy with a soldering iron, the chip costs about a dollar plus shipping:

Invalid Link Removed

Good luck!

Diagrams:

l2000_wiring_diagram_1998.jpg


chris_sistrunk_korean_tribute.jpg
 
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#13,905
svtbass said:
Not if you're going to molest a gorgeous ASAT with a pickguard.
View attachment 3500289
Click to expand...
Here's the deal, the black Signature model would never receive such a treatment because it was probably one of the last guitars Leo touched.

The Blonde has already been molestation,from naturally, by her previous owner drilling holes for multiple strap anchor points, likely to combat this alleged neck dive issue that I've never experienced.

If I add accessories to dress this out like a Telecaster, another Leo Fender creation mind you, I would do so as minimally invasive as possible.

Is that better?
 
#13,907
lynnchpin said:
Here's the deal, the black Signature model would never receive such a treatment because it was probably one of the last guitars Leo touched.

The Blonde has already been molestation,from naturally, by her previous owner drilling holes for multiple strap anchor points, likely to combat this alleged neck dive issue that I've never experienced.

If I add accessories to dress this out like a Telecaster, another Leo Fender creation mind you, I would do so as minimally invasive as possible.

Is that better?
Click to expand...

Sadly, sarcasm is a lost art.

An ASAT bass is the musical version of the two best days in a boat owners life.
 
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#13,908
bonin in the boneyard said:
I have to leave work soon and I'm not sure when I'll get back to the computer, so I'll just give you my thoughts based on what you've said already.

Your being in Denver where humidity is ~20%, my best guess is that some static electricity zapped your preamp chip when you changed the battery. Try this:

--> Take the battery out and see if you can get the bass to work with the preamp selector switch in the passive position.

--> If not, cut the white wire going to the "IN" terminal on the middle of the left edge of preamp board. You can cut the wire at any point along its length between the preamp board and the volume pot, taping the ends so they don't short out to anything else in the control cavity. The diagrams below show the wiring and the particular wire you want to cut. Try to get the bass to work with the preamp selector switch in the passive position.

If this works, then you may only need a new preamp chip. If you or a buddy is handy with a soldering iron, the chip costs about a dollar plus shipping:

Invalid Link Removed

Good luck!

Diagrams:

View attachment 3517869

View attachment 3517870
Click to expand...

Hi,

The bass will work without the battery but all the pots have to be at 100% like before. I'm starting to think I shorted the chip when I changed the battery. :(
 
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#13,911
/\/\3phist0 said:
The chip is not in play when in passive, there is something else at work (or not working) here.
A bad solder joint, or crossed/nicked wires--- possibly in the output path back to the jack
G&L Wiring Diagrams and Schematics
Click to expand...
FWIW a thought came to me, perhaps the volume pot has an issue, does it "seem" to have the full sweep, or is it more like on / off?
 
#13,914
Hey folks, I need some help with some wiring I am trying to do with my L2K. I am wiring it all passive VVT and putting in DPDT on/on/on switches for series/north coil/parallel.

I thought it was going to be straight forward (famous last words)...

Wire codes tested with a multi meter. All wires are silver color, except one black wire which is copper color which I am assuming is ground...but not 100% sure...

North start (+) - green
North finish (-) - yellow
South start (+) - black
South finish (-) - white
Ground - black/copper

Ok, using this diagram I found

Screen Shot 2019-08-24 at 9.31.41 PM.png


I wired it up and it was out of phase (thin/nasally) so i reversed the north wires and it sounded fantastic. Series worked, north coil worked, parallel, not so much. In parallel mode, the south coil was shorted out and basically was the same as the middle north coil position. I treated the black/copper as the bare ground.

Then I used my google-fu and found this diagram

Screen Shot 2019-08-25 at 11.55.48 AM.png


So I used the series/north coil/parallel one, and all three settings appeared to work as all coils seemed to be working based on what i switched, and the tones did vary enough to suggest they were working, however the output was 1/2 what the above setting was. It wasn't out of phase as it still had a lot of bass, but the output/volume was way low, crazy low and I know these MFD's are hot pickups so I knew something had to be wrong.

Anyways, thats where I'm at and would appreciate any suggestions.

Thanks in advance!
 

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