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cclfour

New member
Joined
Oct 18, 2012
Messages
4
Hi, all

I have a JP6 with piezo, it has been my main guitar for 4years. Recently, I have noticed a problem in the piezo-magnet mix mode (the middle position of the selector on top). The A string has faded volume compared to other strings when both the magnet volume and piezo volume is at max. As the volume pot of magnet pick-ups turns down, the volume of A string came back as only the piezo sound is available. It also works fine for magnet pick-up when piezo volume is down. To make it short, with certain amount of mix (piezo+magnet), the volume for A string become significantly weaker than other strings.

Some details of previous problems with the guitar solved or unsolved, there may be hints that can solve my problem.

1. A few months ago,the small metal piece on bridge piece on my A string (the point where the string is held by the bridge) dropped off during the string change and I glued it back in place (as told by a technician). The piezo works fine after that in the piezo mode, but I did not pay attention to the piezo-magnet mix mode (middle position).
2. The volume pot generate noise (sounds like unplug without turn down the amp volume) just before it is turned to max, so it is no longer possible to do a smooth volume swell. I haven't fixed it yet, probably due to aging of the pot...

I guess it is the volume pot problem that makes my A string dumb...cuz both magnet and piezo works fine independantly... Hope anybody can point out the problem so I can fix it. Thanks~
 

Lou

Well-known member
Joined
Jan 23, 2003
Messages
1,356
Location
MA
Contact customer service. Likely you need to replace that saddle.
 

peat

Well-known member
Joined
Sep 15, 2005
Messages
317
Location
Sydney
wow,

I had the exact same thing with my jp6 straight from the factory.
Almost as if that piezo element was in opposite polarity.

Customer service didn't seem to know much about it, so I jumped in and razor bladed the crystal off, and turned it around, stuck it back down.
Now it seems to be fine, that was a few years back.
 

cclfour

New member
Joined
Oct 18, 2012
Messages
4
Thanks for the suggestion, I will try it, didn't know that there is polarity consideration for the little crystal, perhaps I put it the opposite way when I stuck it back last time...
 

cclfour

New member
Joined
Oct 18, 2012
Messages
4
thanks for the reply, i'm outside US. Just want to know if it is indeed the problem suggested by peat on #3---- "the polarity of the little crystal"
 

cclfour

New member
Joined
Oct 18, 2012
Messages
4
wow,

I had the exact same thing with my jp6 straight from the factory.
Almost as if that piezo element was in opposite polarity.

Customer service didn't seem to know much about it, so I jumped in and razor bladed the crystal off, and turned it around, stuck it back down.
Now it seems to be fine, that was a few years back.

Hi, just fixed it this morning, everything works fine now, thanks again
 
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