# Repair Yamaha dx7s

**URL:** <https://forums.syntaur.com/t/repair-yamaha-dx7s/9554>\
**Category:** Synth Repair\
**Tags:** yamaha, no-power\
**Created:** [September 14, 2026, 7:40pm UTC](https://forums.syntaur.com/t/repair-yamaha-dx7s/9554 "2026-09-14T19:40:37Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Nikesam62](https://forums.syntaur.com/letter_avatar_proxy/v4/letter/n/bbe5ce/32.png) [@Nikesam62](https://forums.syntaur.com/u/Nikesam62)\
**Post date:** [September 14, 2026, 7:40pm UTC](https://forums.syntaur.com/t/repair-yamaha-dx7s/9554/1 "2026-09-14T19:40:37Z")

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Looking for HD6805S1A33P firmware. Please share the ROM dump if anyone has it.Has anyone encountered the failure of this chip? What are the options for solving this problem? It is not possible to purchase the original chip.