# \#esq-1-plastic-case

**URL:** https://forums.syntaur.com/tag/esq-1-plastic-case/748.md

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## [Every 8th Key Dead on Ensoniq ESQ-1, any idea what to check on the board?](https://forums.syntaur.com/t/every-8th-key-dead-on-ensoniq-esq-1-any-idea-what-to-check-on-the-board/9436)

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**Author:** [@gordotuomi](https://forums.syntaur.com/u/gordotuomi)\
**Replies:** 2\
**Last updated:** [May 10, 2026, 7:29am UTC](https://forums.syntaur.com/t/every-8th-key-dead-on-ensoniq-esq-1-any-idea-what-to-check-on-the-board/9436 "2026-05-10T07:29:28Z")

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\[Ensoniq\] \[ESQ-1\] – \[Dead Keys\] Hello! I recently picked up an Ensoniq ESQ-1 (plastic version), however it has 7 dead keys: 12, 20, 28, 36, 44, 52, 60. Every dead key is 8 notes apart which means it is likely a circuit …

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## [ESQ1 restoration](https://forums.syntaur.com/t/esq1-restoration/1271)

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**Author:** [@garp](https://forums.syntaur.com/u/garp)\
**Replies:** 16\
**Last updated:** [March 3, 2020, 8:59am UTC](https://forums.syntaur.com/t/esq1-restoration/1271 "2020-03-03T08:59:39Z")

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Hi everyone ! First post here from a french analog synths addict. I have recently restored a plastic esq1 that was “abandoned” in a corner. At first it was not powering on, so i decided to make a full recap and restorati…

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## [Esq-1 noisy output, low volume and eeprom cartridge unresponsive](https://forums.syntaur.com/t/esq-1-noisy-output-low-volume-and-eeprom-cartridge-unresponsive/1034)

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**Author:** [@Plutomadre](https://forums.syntaur.com/u/Plutomadre)\
**Replies:** 34\
**Last updated:** [October 11, 2019, 12:27am UTC](https://forums.syntaur.com/t/esq-1-noisy-output-low-volume-and-eeprom-cartridge-unresponsive/1034 "2019-10-11T00:27:36Z")

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Hello everyone. New owner of a plastic esq-1 3.4. In pretty good condition except it’s output is low and has digital artifacts. I can juice my interface pre amps up 30db and lower the volume fader on the esq-1 to get it …