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Author Topic: Parker P38 Piezo pick up problem  (Read 191 times)

Offline Roffers

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Parker P38 Piezo pick up problem
« on: December 01, 2018, 06:52:49 AM »
Hi, I have bought a parker P38 guitar and the pick up is very crackly and scratchy when using the control knob. I gave it to my guitar tech to fix, who said he believed it was the circuit board. I was told the Parker P38 can get a replaceable Fishman power chip. Does anyone know if this would be the cause as it would cost me £100 plus fitting? Thanks for any help.

Re: Parker P38 Piezo pick up problem

Offline Barry

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Re: Parker P38 Piezo pick up problem
« Reply #1 on: December 01, 2018, 01:14:05 PM »
What you're describing is usually caused by oxidation on the control pot's wiper.
It's easily fixed by liberally spraying inside the casing with Electrical Contact spray (Do Not use WD40!).
Work the shaft vigorously after spraying to spread the fluid and after a few minutes to allow for drying the crackling should be gone.Has your tech not tried this?
Love one woman, many vintage guitars.
Or...was it the other way around?

PM-20 Hornet Red Bubinga owner & recovering GAS addict

Re: Parker P38 Piezo pick up problem

Offline Roffers

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Re: Parker P38 Piezo pick up problem
« Reply #2 on: December 01, 2018, 02:35:38 PM »
Thanks Barry, he tried this twice and didn't work, which why after research he believes it needs the replacement part.

Re: Parker P38 Piezo pick up problem

Offline Barry

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Re: Parker P38 Piezo pick up problem
« Reply #3 on: December 01, 2018, 09:34:14 PM »
Fair enough, worth a mention at least.I've not owned a P38 but from what I've read in these forums that power chip appears to be problematic with this model.Good luck.
Love one woman, many vintage guitars.
Or...was it the other way around?

PM-20 Hornet Red Bubinga owner & recovering GAS addict

Re: Parker P38 Piezo pick up problem

Offline Roffers

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Re: Parker P38 Piezo pick up problem
« Reply #4 on: December 02, 2018, 05:25:31 AM »
Definitely Barry! As a novice on parkers I welcome any help!

Re: Parker P38 Piezo pick up problem

Offline billy

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Re: Parker P38 Piezo pick up problem
« Reply #5 on: December 03, 2018, 07:52:25 PM »
Easy enough to swap the pot as a first step.

There could be an issue with the power chip but start with the simplest things first.

Good luck!
Billy

[always the beautiful answer who asks a more beautiful question.  e. e. cummings]

Re: Parker P38 Piezo pick up problem

Offline Barry

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Re: Parker P38 Piezo pick up problem
« Reply #6 on: December 04, 2018, 08:45:55 AM »
Easy enough to swap the pot as a first step.

There could be an issue with the power chip but start with the simplest things first.

Good luck!
You could also quick-test it in place using a multimeter, if the tech didn't already do that. If the resistance readings are erratic, that would indicate a replacement would be a good idea.
Love one woman, many vintage guitars.
Or...was it the other way around?

PM-20 Hornet Red Bubinga owner & recovering GAS addict

Re: Parker P38 Piezo pick up problem

Offline Roffers

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Re: Parker P38 Piezo pick up problem
« Reply #7 on: December 04, 2018, 01:06:50 PM »
Hi, thanks pot was also replaced. I will ask about multimeter. Cheers guys!

Re: Parker P38 Piezo pick up problem

Offline Barry

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Re: Parker P38 Piezo pick up problem
« Reply #8 on: December 05, 2018, 07:51:09 PM »
If your pot was already replaced then no need to test it. The multimeter suggestion was for testing the original part.  ;)
Love one woman, many vintage guitars.
Or...was it the other way around?

PM-20 Hornet Red Bubinga owner & recovering GAS addict