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Unread 03-12-2012, 11:42 PM   #1 (permalink)
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Exclamation Epiphone LP Ultra II Wiring Repair

So I went to play my Ultra II through the nanomag and got no signal.
I opened it up and this wire was free. I can't find any broken solder points so I need help finding where it goes. Can anyone help me out? Thanks!

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Unread 03-13-2012, 12:27 AM   #2 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Well its a ground wire, google nano mag wiring and see what you get.
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Unread 03-13-2012, 12:29 AM   #3 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Do those guitars have two input jacks?
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Unread 03-13-2012, 12:37 AM   #4 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

When I look at a wiring diagrams it does seems to be a ground.
And yes it has two output jacks.
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Unread 03-13-2012, 12:56 AM   #5 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Check the out put jack for the nano mag.I'll bet its missing the ground wire.
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Unread 03-13-2012, 01:02 AM   #6 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Actually I checked that already. It was my first guess but the nanomag jack has all the proper connections, as far as I can tell from the circuit diagrams anyway, and there's no broken solder points.
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Unread 03-13-2012, 01:04 AM   #7 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Well turn the guitar on and find where it goes.Touch all the places it reaches.
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Unread 03-13-2012, 01:04 AM   #8 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

It may be a ground to another pot.
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Unread 03-13-2012, 01:05 AM   #9 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

I'll give it a try. Sadly the wire reaches just about everywhere.
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Unread 03-13-2012, 01:08 AM   #10 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

I couldn't find a diagram for that set up online.
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Unread 03-13-2012, 01:26 AM   #11 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Any luck yet?
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Unread 03-13-2012, 01:39 AM   #12 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Nothing but a few nasty crackles, unfortunately, even when I try hooking the wire to the ground on the second jack.
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Unread 03-13-2012, 01:41 AM   #13 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Contact EPI and see if they can help you.
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Unread 03-13-2012, 01:43 AM   #14 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

I think that's what I'm going to have to do, thanks for the help anyway.
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Unread 03-13-2012, 01:47 AM   #15 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Quote:
Originally Posted by straycat View Post
Do those guitars have two input jacks?
NO,

they're 'output' jacks

one for the humbuckers or both pup-systems
one for the NanoMag
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Unread 03-13-2012, 01:52 AM   #16 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Quote:
Originally Posted by Th4tguy View Post
I think that's what I'm going to have to do, thanks for the help anyway.
Maybe this thread at the corporate forum can help...

lots of pics from the control cavity

and a link to a wiring diagram, too

Les paul Ultra 2 - Gibson Guitar Board
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Unread 03-13-2012, 02:01 AM   #17 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Well I guess that ground wire didn't need to be connected, as far as I can tell from the picture anyway, perhaps I just screwed up some of the electronics at some point then. I'll contact epiphone tomorrow to see what they think. But for now, thank you.

And at least the other two pickups still work.
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Unread 03-13-2012, 09:07 AM   #18 (permalink)
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Re: Epiphone LP Ultra II Wiring Repair

Quote:
Originally Posted by paruwi View Post
NO,

they're 'output' jacks

one for the humbuckers or both pup-systems
one for the NanoMag
Well you are correct thanks.
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