# Roland jd990 repair

**URL:** <https://forums.syntaur.com/t/roland-jd990-repair/4917>\
**Category:** Uncategorized\
**Created:** [November 28, 2022, 1:59pm UTC](https://forums.syntaur.com/t/roland-jd990-repair/4917 "2022-11-28T13:59:49Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Fabiojdbrasil](https://forums.syntaur.com/letter_avatar_proxy/v4/letter/f/7c8e57/32.png) [@Fabiojdbrasil](https://forums.syntaur.com/u/Fabiojdbrasil)\
**Post date:** [November 28, 2022, 1:59pm UTC](https://forums.syntaur.com/t/roland-jd990-repair/4917/1 "2022-11-28T13:59:49Z")

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My name is Fabio, very nice to meet you, I live in Brazil, I have 2 jd990 and one of them in the last week when I turn it on, the sounds of the timbres do not come out anymore, it only comes out with a hiss in the headphone output and in the LeR outputs, what could have moved?

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**Author:** ![midnightvisions](https://forums.syntaur.com/user_avatar/forums.syntaur.com/midnightvisions/32/774_2.png) [@midnightvisions](https://forums.syntaur.com/u/midnightvisions)\
**Post date:** [November 30, 2022, 10:37am UTC](https://forums.syntaur.com/t/roland-jd990-repair/4917/2 "2022-11-30T10:37:34Z")

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have a look here,

> **[Jd990 noise - Gearspace.com](https://gearspace.com/board/electronic-music-instruments-and-electronic-music-production/396011-jd990-noise.html)**
>
> I'm using a JD990 and I just realized how much noisier it is than my other synths (white...

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<div class="post-metadata">

**Author:** ![Fabiojdbrasil](https://forums.syntaur.com/letter_avatar_proxy/v4/letter/f/7c8e57/32.png) [@Fabiojdbrasil](https://forums.syntaur.com/u/Fabiojdbrasil)\
**Post date:** [December 2, 2022, 1:12pm UTC](https://forums.syntaur.com/t/roland-jd990-repair/4917/3 "2022-12-02T13:12:48Z")

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Thanks a lot for the info buddy. In my case the problem was in the capacitor 3300 that leaked and in the voltage regulator of the motherboard 78L05 that was burned. I replaced these two components and then calibrated and the problem was solved. thank you very much for your attention.

 ![Screenshot_20221130-164105_Gallery](https://forums.syntaur.com/uploads/default/original/2X/0/0b36199f8c9b473d6745ae31652c979e9c8910e9.jpeg)