# \#oberheim
**URL:** https://forums.syntaur.com/tag/oberheim/72.md
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## [Oberheim OBXa early model (series 2)](https://forums.syntaur.com/t/oberheim-obxa-early-model-series-2/9372)
**Author:** [@DrSmith](https://forums.syntaur.com/u/DrSmith)\
**Replies:** 5\
**Last updated:** [March 26, 2026, 7:35am UTC](https://forums.syntaur.com/t/oberheim-obxa-early-model-series-2/9372 "2026-03-26T07:35:22Z")
Oberheim OBXa early model (series 2) All 8 voices are continuously sounding. Each are receiving 5v on pin G1. Interestingly, autotune causes them to stop sounding and they cycle through the autotune routine. The second…
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## [Oberheim OB-8 will no longer start up after PSU repair](https://forums.syntaur.com/t/oberheim-ob-8-will-no-longer-start-up-after-psu-repair/9289)
**Author:** [@sammyhirsh](https://forums.syntaur.com/u/sammyhirsh)\
**Replies:** 7\
**Last updated:** [January 7, 2026, 3:56pm UTC](https://forums.syntaur.com/t/oberheim-ob-8-will-no-longer-start-up-after-psu-repair/9289 "2026-01-07T15:56:50Z")
Hi there, I have an Oberheim OB-8 that I am trying to get it going and I am posting this to see if anyone has encounted these problems before - which do not seem to be documented online. This is an early OB-8, with a Pa…
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## [Oberheim Matrix 1000 Corrupt ROM Patches](https://forums.syntaur.com/t/oberheim-matrix-1000-corrupt-rom-patches/561)
**Author:** [@joelstewart1988](https://forums.syntaur.com/u/joelstewart1988)\
**Replies:** 5\
**Last updated:** [February 12, 2019, 2:49pm UTC](https://forums.syntaur.com/t/oberheim-matrix-1000-corrupt-rom-patches/561 "2019-02-12T14:49:18Z")
I have an Oberheim Matrix 1000 that had a pretty loud power supply hum issue. I hired a local electronics shop to install a new power supply as detailed here: Oberheim Matrix 1000 PSU Fix guide - Gearspace New power sup…