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Thread: Piezo problems...

  1. #1

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    Piezo problems...

    Ok. I've sent this guitar back 2 times already and I am extremely appreciative for the service I've had. Nothing but compliments to everyone at the company!!!

    However, this problem keeps resurfacing.

    JP 6 string fully loaded w/ piezo. The original problem is that one day, after about owning the guitar new from a store for 4 months, the piezo suddenly got very, very quiet as if the battery had died. Lack of bass frequencies and a very thin trebley sound. I changed the battery to a new alkaline, and no change. Tried 2 more batteries, no changes. I tried expensive and cheap cables, different amps, configurations, preamps... no change.

    Sent the guitar back, and I believe they changed out the bridge assembly. Great. Got it back, it worked. Great. 2 weeks later, same exact thing. Tried all remedies, no change. Sent it back again. I think they changed the preamp this time. Got it back, worked great. Now 1 month later, the piezo is acting up again.

    This time, though, it fades in and out randomly. I've been trying to find some sort of pattern or trigger or something, but it just happens randomly. (Actually it seems to happen when i play a bad note or something!!!)

    The sound gets THIN, NO bass whatsoever, volume cuts in half. I've tried mono cables, stereo cables, messing with the EQ and mix controls, changing strings, looking for bad solder points or connections (there aren't any that look bad), checking the switches. I can only wonder if the piezo volume pot was the only thing never looked at.

    But why would this thing fade in and out randomly. Again, I really can't find ANY trigger for this... I can't MAKE it not work, and when it doesn't work, I can't MAKE it work again. And the length of time from when it works to not working changes all the time from seconds, to minutes, to even hours!

    Sometimes I'll play it, it works, put it in the case, revisit the guitar another day, and it doesn't work... then fades back in randomly.

    It doesn't seem like a saddle issue, as ALL saddles exhibit the same drop in volume and gain equally. It's not like, the low string saddles go out, and the high strings are ok... they all equally drop.

    EB was so nice to gut the preamp and bridge assy. to try and fix my guitar, but it's happening again. I really treat this instrument well, and don't drop it or be forceful or anything!

    Any ideas. I have shows dependant on my acoustic guitar sound, and for me to have to take my acoustic as back up for this thing is not what i want... that's why i bought this guitar! it rips, and is perfect for me.

    Help.

    Thanks.

    Please.

  2. #2

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    Wow, that really sucks.

    Best advice is to call customer service again. They're take care of you. Anything else is just a guess.

  3. #3

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    True, I just wanna see if there are any other suggestions before I call them a 3rd time. They'd probly think I'm jumping on the thing to make it stop working!

  4. #4

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    Quote Originally Posted by chrisallen View Post
    True, I just wanna see if there are any other suggestions before I call them a 3rd time. They'd probly think I'm jumping on the thing to make it stop working!
    I'd very much doubt that, they are more than willing to help you until the problem is solved.

    You said that you haven't checked the volume control, maybe a loss wire on that, or just a dodgy pot.

    Scott.
    Limited edition True Gold Luke On order - For a third time, thanks Colin
    Dargie Delight II Luke with matching headstock Once again, thanks Colin.
    Ernie Ball BFR Luke (Bahama Blue) AWESOME - Thanks Colin.
    Ernie Ball Luke 1 (that blue color)
    Rivera Knucklehead
    Rivera Bonehead

    http://www.guitarplanet.com.au/ Australia's best Musicman dealer.

  5. #5

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    it's funny because it doesn't take a jolt or any physical force to make it stop working. i can strum very lightly without causing much vibration through the guitar and it can happen.

    is there any way to check a pot without actually replacing it?

    and i'm sure EB checked everything on it... gahhhhhhhhhh!!!!! it's a bit frustratin!

  6. #6

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    Hey try and check the Battery connections maybe the you have some on and off connection.
    Mick
    EVH transblack 1995 slightly faded
    Silhouette transteal 1994 (updated with a compensated nut!)


    Mick´s Guitar Center
    Landshut/Germany
    www.facebook.com/MicksGuitarCenter
    "We offer extremly high quality & extremly low prices! - Pick one!"

  7. #7

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    Quote Originally Posted by Mick View Post
    Hey try and check the Battery connections maybe the you have some on and off connection.
    Yeah l had the very same problem with my Luke 1, when the sound dies down push on the battery compartment, if the sound comes back on, it's the wire in there.

    Scott.
    Limited edition True Gold Luke On order - For a third time, thanks Colin
    Dargie Delight II Luke with matching headstock Once again, thanks Colin.
    Ernie Ball BFR Luke (Bahama Blue) AWESOME - Thanks Colin.
    Ernie Ball Luke 1 (that blue color)
    Rivera Knucklehead
    Rivera Bonehead

    http://www.guitarplanet.com.au/ Australia's best Musicman dealer.

  8. #8

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    Could also be the way the battery is fitting in the compartment. Some 9v work better than others for some odd reason.
    KEITH
    FAMOUSLY SNARKY SINCE 2003

  9. #9

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    This sounds to me as if there´s a bad soldering point...just re-solder em. I think this would solve the problem.

    Random fates and such stuff is often just because of a bad soldering.

  10. #10

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    Cool. I will try that stuff again. I've made sure the contacts are in constant, well, contact with the battery, and the connections are all solid... but i will look again.

    Crazy that a $10 piece would compromise a $2000 instrument...

    Actually when I bought it, the elctric ridge pickup was not soldered on correctly... it was a single coil! Eh...

  11. #11

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    JON? any ideas?
    Two requests, please
    Please contact customer service prior to posting instrument issues
    Please don't PM me
    Thanks

    Please dont add me as a friend on facebook....my life is an open book here as it is.

  12. #12

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    Well, we have replaced the bridge, and preamp. There is not much else that could be wrong, but I would check the battery box. The contacts in the box can get flattened out over time, and with the multiple battery changes, this could have happened.

    If after you check this out, and you still have the problem, by all means, call customer service. We will make it right.

  13. #13

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    woah! the man the myth the awesomeness poppa!

    hehe. i think jon actually worked on my guitar both times i sent it up there! i'm the dude from easy music center in hawaii.

    i mean, if it's user error or something, i'll own up to it... after 2 times back there i can't help but think it's something i'm doing, but i'm so sure i'm not doing anything crazy.


    edit - ok it was jon hehe. he posted while i was typing! but yeah, i'll check the battery box again.

    again, i REALLY appreciate everything. i just wanted to post the issue here first to see if i'm being dumb and overlooking something that another user may have encountered as well. thanks!
    Last edited by chrisallen; 10-23-2006 at 06:42 PM.

  14. #14

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    It might be a good idea to test anything and everything you're plugging the piezo into... I mean, I don't know much about electronics, but the circuitry for the piezo must be IC stuff, and that's fairly fragile: is it possible that a power surge or short could be doing something to the preamp that's making this problem rear it's ugly head only after some use? I mean, that's the weirdest thing - in every case it works for a while, and then it goes wonky...

    off topic: We just went through a hellish time finding a short that was intermittently electrocuting us in our jamspace - imagine four guys running around with volt meters and screwdrivers and extension chords everywhere... Ultimately, we had to go all the way back to the circuit board for the house wiring... Anyway, it reminded me how fickle and harmful power problems can be... Oh ya, and those shocks can hurt! And to think that in the old days when we came across the problem in a bar we'd just tape foam over the mic and scream louder!

  15. #15

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    i've tried everything. i fortunately work at a music store, so i can try all sorts of cables, amps, etc... so, yah.

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