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FDP Forum / FDP Unplugged - Acoustic Instruments / how can a piezo saddle pickup go wrong?

Stratopastor

Stockton-on-Tees

all your tone are belong to us
May 6th, 2015 06:37 AM   Edit   Profile   Print Topic   Search Topic

Yamaha acoustic with a passive Martin pickup professionally fitted under the saddle 26 years ago; never a moment's trouble. Then it stops working.

So I slackened all the strings to get at the end-pin jack socket, all well there. Reconnect to an amp... it amplifies body noise just like before! restring but slack... still working... tune up 5 strings... still working.. tune up the high E and it stops! Tune down the high E and it comes back around C! back up to E... nothing!

Can these things crack? any other ideas? Thanks and best wishes....

Steve Dallman
Contributing Member
********

Merrill, Wisconsin

Age is just a number...mine is big
May 6th, 2015 08:23 AM   Edit   Profile   Print Topic   Search Topic

They can fail. The connection between the two cable connections and the piezo might break or the piezo/ground connection at the end might break depending on the type.

Different designs (piezo pieces, piezo strip, piezo coax, piezo film...) can fail in different manners.

I don't know what type you have in your guitar. Martin Thinline pickups are Fishman, but there's been a change or two over the years.

It is also possible the endpin is the problem.

The piezo and endpin should be removed and inspected. Luckily, replacments are pretty reasonable...around $55 if I recall.

reverend mikey
Contributing Member
*********

west Omaha, east NE

Life gets in the way of my G.A.S.
May 6th, 2015 09:55 AM   Edit   Profile   Print Topic   Search Topic

I wonder if you could try a drop or two of superglue at the joint (where the wire drops through the hole in the bridge) and maybe even under the E string?

Sounds like the pressure is causing a loss of connection in it on that end - the superglue *might* keep the contact under pressure.

Let it dry completely before putting it back in and restringing.

Stratopastor

Stockton-on-Tees

all your tone are belong to us
May 6th, 2015 03:34 PM   Edit   Profile   Print Topic   Search Topic

thanks gents, much appreciated...

Stratopastor

Stockton-on-Tees

all your tone are belong to us
May 8th, 2015 12:10 PM   Edit   Profile   Print Topic   Search Topic

I've taken the pickup out of the saddle slot. The saddle was shimmed with a couple of strips of heavy paper/thin card on top of the pickup. I tried putting the shims under the pickup instead, and it works when correctly tuned... played it hard, still works. We'll see how that goes.

FDP Forum / FDP Unplugged - Acoustic Instruments / how can a piezo saddle pickup go wrong?




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