# Ensoniq ESQ-1 noise

**URL:** <https://forums.syntaur.com/t/ensoniq-esq-1-noise/2952>\
**Category:** Synth Repair\
**Created:** [March 26, 2021, 1:24pm UTC](https://forums.syntaur.com/t/ensoniq-esq-1-noise/2952 "2021-03-26T13:24:13Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![Johan](https://forums.syntaur.com/letter_avatar_proxy/v4/letter/j/dec6dc/32.png) [@Johan](https://forums.syntaur.com/u/Johan)\
**Post date:** [March 31, 2021, 11:09pm UTC](https://forums.syntaur.com/t/ensoniq-esq-1-noise/2952/7 "2021-03-31T23:09:41Z")

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Success!  
When searching the web for others with jumpy value-sliders(another fault I had on my esq-1) I found this thread:  
[https://forums.syntaur.com/t/ensoniq-es … und/448/13](https://forums.syntaur.com/t/ensoniq-esq-1-filter-tuning-zero-and-almost-no-sound/448/13)  
“we\_robot” suggested looking at U40 and it’s filter caps being 0.01 instead of the recommended 0.1. This is some fault from the factory, supposedly.  
I replaced these caps and lo and behold, both the jumping in the value-slider and the noise are gone!

 ![](https://i.imgur.com/IUXn2Gl.jpg)

It is still gritty sounding, but when turning off the DCAs it is silent(in some patches I can still hear the filter clicking but I think that is normal).

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