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Testing pickups - JohnnyK - 21:55 05-12-05

I have an older gibson epiphone strat copy that I liked and put a
dimarzio humbucker on it awhile ago.. That guitar has taken a severe
beating and no volume comes out of it. I resoldered it to no avail.. How
can I tell if the pickups are shot.. It's not a 4 wire humbucker, and
nothing comes out of the guitar, so I can't really test it there.. Thanks!


Re: Testing pickups - Rat - 08:18 06-12-05


"JohnnyK" <johnkrikorian@symp.ca> schrieb im Newsbeitrag
news:d%6lf.1321$kt5.281370@news20.bellglobal.com...
> I have an older gibson epiphone strat copy that I liked and put a
> dimarzio humbucker on it awhile ago.. That guitar has taken a severe
> beating and no volume comes out of it. I resoldered it to no avail.. How
> can I tell if the pickups are shot.. It's not a 4 wire humbucker, and
> nothing comes out of the guitar, so I can't really test it there.. Thanks!
>

on a 2 wire pu it's really easy ... in case you have a mulitimeter that is
... disconnect the PU and meassure the resistance between the two wires ...
depending on how "hot" the PU is it should be somewhere between 8 and 15
kOhms I'd say ... if it is lower or almost zero you have a short, if it is
much higher or infinite then the PU wire is probably broken ... in both
cases the PU needs to be rewound (which is probably overkill on this PU) ...

another method would be to disconnect the PU and run a wire from one PU wire
to one connector of the output jack on the guitar and another wire from the
other PU wire to the other connector of the jack ... so your guitar acts as
if all controlls are fully open ... if you still have no signal then the pu
is dead I guess we can rule out the output jack) ... if you have a signal
now then there is something wrong with the wiring or pots ...

hope this helps




Re: Testing pickups - harryj - 08:25 06-12-05


"JohnnyK" <johnkrikorian@symp.ca> wrote in message
news:d%6lf.1321$kt5.281370@news20.bellglobal.com...
>I have an older gibson epiphone strat copy that I liked and put a dimarzio
>humbucker on it awhile ago.. That guitar has taken a severe beating and no
>volume comes out of it. I resoldered it to no avail.. How can I tell if the
>pickups are shot.. It's not a 4 wire humbucker, and nothing comes out of
>the guitar, so I can't really test it there.. Thanks!
>
----------------

Rat nailed it
I might add that it would be pretty hard to destroy a pickup, I'm guessing
it's a solder connection somewhere

HJ



Re: Testing pickups - JohnnyK - 14:14 06-12-05

Well, in attempt to convince my band we need new PA speakers, the guitar
had to go through one... ANd it kind of shredded the top of a pickup
(this is my old childhood guitar.. Ahh, some good times we've had).. So
I might just have to buy a new one, but if I can find out whats wrong,
that would be swell.. It's a dimarzio.. Has a sheathed metal, and I
believe a white and black wire.. What would be what? (We got new pa
speakers!!) :D

harryj wrote:
> "JohnnyK" <johnkrikorian@symp.ca> wrote in message
> news:d%6lf.1321$kt5.281370@news20.bellglobal.com...
>
>>I have an older gibson epiphone strat copy that I liked and put a dimarzio
>>humbucker on it awhile ago.. That guitar has taken a severe beating and no
>>volume comes out of it. I resoldered it to no avail.. How can I tell if the
>>pickups are shot.. It's not a 4 wire humbucker, and nothing comes out of
>>the guitar, so I can't really test it there.. Thanks!
>>
>
> ----------------
>
> Rat nailed it
> I might add that it would be pretty hard to destroy a pickup, I'm guessing
> it's a solder connection somewhere
>
> HJ
>
>


Re: Testing pickups - JohnnyK - 15:17 06-12-05

yup, we have nothing coming out of the wires.. (well, when I check the
black and white wires).. THe other single coils say about 7-8 when I
check their two wires.

Rat wrote:
> "JohnnyK" <johnkrikorian@symp.ca> schrieb im Newsbeitrag
> news:d%6lf.1321$kt5.281370@news20.bellglobal.com...
>
>>I have an older gibson epiphone strat copy that I liked and put a
>>dimarzio humbucker on it awhile ago.. That guitar has taken a severe
>>beating and no volume comes out of it. I resoldered it to no avail.. How
>>can I tell if the pickups are shot.. It's not a 4 wire humbucker, and
>>nothing comes out of the guitar, so I can't really test it there.. Thanks!
>>
>
>
> on a 2 wire pu it's really easy ... in case you have a mulitimeter that is
> ... disconnect the PU and meassure the resistance between the two wires ...
> depending on how "hot" the PU is it should be somewhere between 8 and 15
> kOhms I'd say ... if it is lower or almost zero you have a short, if it is
> much higher or infinite then the PU wire is probably broken ... in both
> cases the PU needs to be rewound (which is probably overkill on this PU) ...
>
> another method would be to disconnect the PU and run a wire from one PU wire
> to one connector of the output jack on the guitar and another wire from the
> other PU wire to the other connector of the jack ... so your guitar acts as
> if all controlls are fully open ... if you still have no signal then the pu
> is dead I guess we can rule out the output jack) ... if you have a signal
> now then there is something wrong with the wiring or pots ...
>
> hope this helps
>
>
>


Re: Testing pickups - Jim Anable - 15:27 06-12-05

JohnnyK wrote:

> I have an older gibson epiphone strat copy that I liked and put a
> dimarzio humbucker on it awhile ago.. That guitar has taken a severe
> beating and no volume comes out of it. I resoldered it to no avail.. How
> can I tell if the pickups are shot.. It's not a 4 wire humbucker, and
> nothing comes out of the guitar, so I can't really test it there.. Thanks!

What does it read with an ohm meter?

Re: Testing pickups - JohnnyK - 16:58 06-12-05

1 I believe.. Or at least the same as when the electrodes aren't
touching themselves or anything else.

Jim Anable wrote:
> JohnnyK wrote:
>
>> I have an older gibson epiphone strat copy that I liked and put a
>> dimarzio humbucker on it awhile ago.. That guitar has taken a severe
>> beating and no volume comes out of it. I resoldered it to no avail..
>> How can I tell if the pickups are shot.. It's not a 4 wire humbucker,
>> and nothing comes out of the guitar, so I can't really test it there..
>> Thanks!
>
>
> What does it read with an ohm meter?


Re: Testing pickups - Jim Anable - 18:27 06-12-05


JohnnyK wrote:

> 1 I believe.. Or at least the same as when the electrodes aren't
> touching themselves or anything else.

That's called an open. You have a bad connection or a broken wire. The
pickup wire is very, very thin. If it broke inside, it's cooked. Try
the connection to the lead, if you can get to it.

>
> Jim Anable wrote:
>
>> JohnnyK wrote:
>>
>>> I have an older gibson epiphone strat copy that I liked and put a
>>> dimarzio humbucker on it awhile ago.. That guitar has taken a severe
>>> beating and no volume comes out of it. I resoldered it to no avail..
>>> How can I tell if the pickups are shot.. It's not a 4 wire humbucker,
>>> and nothing comes out of the guitar, so I can't really test it
>>> there.. Thanks!
>>
>>
>>
>> What does it read with an ohm meter?
>
>

Re: Testing pickups - boardjunkie - 18:38 06-12-05

>I might add that it would be pretty hard to destroy a pickup, I'm guessing
i>t's a solder connection somewhere

Not really. I see bad ones all the time. Acid sweaters and beer
spillage. Anything that can make its way through the wax and get the
corrosion started opens 'em up. More common than most ppl think.


Re: Testing pickups - JohnnyK - 19:59 06-12-05

Well I can see some of the red coil wire is kind of banged into each
other and mangled.. BUt you'd think it wouldn't be open, since it's all
still touching each other (even if it IS broken, which it quite possible
is).

Jim Anable wrote:
>
> JohnnyK wrote:
>
>> 1 I believe.. Or at least the same as when the electrodes aren't
>> touching themselves or anything else.
>
>
> That's called an open. You have a bad connection or a broken wire. The
> pickup wire is very, very thin. If it broke inside, it's cooked. Try
> the connection to the lead, if you can get to it.
>
>>
>> Jim Anable wrote:
>>
>>> JohnnyK wrote:
>>>
>>>> I have an older gibson epiphone strat copy that I liked and put a
>>>> dimarzio humbucker on it awhile ago.. That guitar has taken a severe
>>>> beating and no volume comes out of it. I resoldered it to no avail..
>>>> How can I tell if the pickups are shot.. It's not a 4 wire
>>>> humbucker, and nothing comes out of the guitar, so I can't really
>>>> test it there.. Thanks!
>>>
>>>
>>>
>>>
>>> What does it read with an ohm meter?
>>
>>
>>


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