# Latest **URL:** https://forums.syntaur.com/latest.md?page=2 [Latest](https://forums.syntaur.com/latest.md) · [Categories](https://forums.syntaur.com/categories.md) · [Tags](https://forums.syntaur.com/tags.md) **Page:** 3 --- ## [Kawai MP 9000 need key hinge](https://forums.syntaur.com/t/kawai-mp-9000-need-key-hinge/9536)
**Author:** [@salsperrazza](https://forums.syntaur.com/u/salsperrazza)\ **Replies:** 0\ **Last updated:** [August 18, 2026, 1:40am UTC](https://forums.syntaur.com/t/kawai-mp-9000-need-key-hinge/9536 "2026-08-18T01:40:19Z")
I contacted Kawai, they have discontinued parts for this model. It’s a low C so I can still play the middle and high end but I sure miss that low C. Looking for help! --- ## [Yamaha CS50 no sound generated. Some floor noise at full volume](https://forums.syntaur.com/t/yamaha-cs50-no-sound-generated-some-floor-noise-at-full-volume/9517)
**Author:** [@TTMiller](https://forums.syntaur.com/u/TTMiller)\ **Replies:** 5\ **Last updated:** [August 17, 2026, 11:35pm UTC](https://forums.syntaur.com/t/yamaha-cs50-no-sound-generated-some-floor-noise-at-full-volume/9517 "2026-08-17T23:35:38Z")
Yamaha CS50 No sound generated When I received it the voltages were bad or missing. I rebuilt the power supply. All voltages good at the load end. With the volume all the way up, I get noise. I can hear a faint genera… --- ## [AKAI AX80 Banks A&B Patch Parm Setting Values](https://forums.syntaur.com/t/akai-ax80-banks-a-b-patch-parm-setting-values/9408)
**Author:** [@PianoDudeFL](https://forums.syntaur.com/u/PianoDudeFL)\ **Replies:** 1\ **Last updated:** [August 14, 2026, 11:12pm UTC](https://forums.syntaur.com/t/akai-ax80-banks-a-b-patch-parm-setting-values/9408 "2026-08-14T23:12:26Z")
I have an AX80 whose green & black graphic display (VSD?) is no longer working. While I was able to locate a website to load the A & B banks, it appears that because of at least this (and I believe a failed chip inside)… --- ## [AX80 dead and doubled voices](https://forums.syntaur.com/t/ax80-dead-and-doubled-voices/9532)
**Author:** [@Angelo](https://forums.syntaur.com/u/Angelo)\ **Replies:** 0\ **Last updated:** [August 14, 2026, 3:45pm UTC](https://forums.syntaur.com/t/ax80-dead-and-doubled-voices/9532 "2026-08-14T15:45:18Z")
My AX80 is being troublesome again. It has firmware version K and has been upgraded with the Tauntek firmware. Symptoms are similar like the other dead note thread I found here except there’s a second error where in add… --- ## [Looking for Ensonic EPS mainboard layout](https://forums.syntaur.com/t/looking-for-ensonic-eps-mainboard-layout/9525)
**Author:** [@IvanF](https://forums.syntaur.com/u/IvanF)\ **Replies:** 1\ **Last updated:** [August 13, 2026, 3:57am UTC](https://forums.syntaur.com/t/looking-for-ensonic-eps-mainboard-layout/9525 "2026-08-13T03:57:19Z")
Does anyone have a main board layout diagram Ensoniq EPS original? (1MB RAM version) I have the schematics and service manual. On the actual board most of the component numbers are underneath the actual components. I’… --- ## [Roland TB-303 oddities](https://forums.syntaur.com/t/roland-tb-303-oddities/9514)
**Author:** [@djlithium](https://forums.syntaur.com/u/djlithium)\ **Replies:** 14\ **Last updated:** [August 12, 2026, 8:43pm UTC](https://forums.syntaur.com/t/roland-tb-303-oddities/9514 "2026-08-12T20:43:04Z")
\[Roland\] \[TB-303\] – \[CPU or LED Noise? Failing banks?\] Hi there. First-time poster, long-time fan of Syntar. I have a Roland TB-303 here which I have had since 1996. I rarely use it for a number of reason but I want to… --- ## [Seeking Roland HP 330 Volume / Display / Buttons board](https://forums.syntaur.com/t/seeking-roland-hp-330-volume-display-buttons-board/9531)
**Author:** [@PaulFitz](https://forums.syntaur.com/u/PaulFitz)\ **Replies:** 0\ **Last updated:** [August 12, 2026, 7:15pm UTC](https://forums.syntaur.com/t/seeking-roland-hp-330-volume-display-buttons-board/9531 "2026-08-12T19:15:37Z")
Ho! Im trying to locate a volume slider, controls, buttons board for hp330. I had to move 20 years ago and gutted the whole body saving the amp section and misplaced the control panel. The plan: i was already using … --- ## ["Clacking" keys on Kurzweil Mark 10](https://forums.syntaur.com/t/clacking-keys-on-kurzweil-mark-10/9527)
**Author:** [@ejb123](https://forums.syntaur.com/u/ejb123)\ **Replies:** 4\ **Last updated:** [August 12, 2026, 12:58pm UTC](https://forums.syntaur.com/t/clacking-keys-on-kurzweil-mark-10/9527 "2026-08-12T12:58:44Z")
I have a Kurzweil Mark 10 (circa 1994), which I love (mostly classical music). It was not played for 30 years, but I’ve now started again. I recently opened and cleaned the Fatar contacts and circuit board, (which were p… --- ## [Korg 01/W 61 key](https://forums.syntaur.com/t/korg-01-w-61-key/4340)
**Author:** [@dshore722](https://forums.syntaur.com/u/dshore722)\ **Replies:** 1\ **Last updated:** [August 12, 2026, 6:37am UTC](https://forums.syntaur.com/t/korg-01-w-61-key/4340 "2026-08-12T06:37:12Z")
My combination patches have gone out of tune when I turn on and start playing. Program patches are still in tune. Do I need to replace the whole main board? --- ## [Korg i3 keyboard](https://forums.syntaur.com/t/korg-i3-keyboard/9526)
**Author:** [@Jermaine.55](https://forums.syntaur.com/u/Jermaine.55)\ **Replies:** 1\ **Last updated:** [August 11, 2026, 7:00am UTC](https://forums.syntaur.com/t/korg-i3-keyboard/9526 "2026-08-11T07:00:58Z")
Trying to find black and white notes for korg i3 61 keys keyboard --- ## [Korg Poly 800 mk1 CRAZY DISPLAY](https://forums.syntaur.com/t/korg-poly-800-mk1-crazy-display/3699)
**Author:** [@Lovetohit](https://forums.syntaur.com/u/Lovetohit)\ **Replies:** 2\ **Last updated:** [August 8, 2026, 7:26am UTC](https://forums.syntaur.com/t/korg-poly-800-mk1-crazy-display/3699 "2026-08-08T07:26:06Z")
Yesterday, after a long sleep and no usage for a year, I installed new C batteries into my old Korg Poly 800 and loaded a new soundbank in via audio cable. It was working fine, but i walked away for 5 min, only to sudde… --- ## [Nord Stage 2 EX HP76 – Block screen hang on boot, PSU suspect](https://forums.syntaur.com/t/nord-stage-2-ex-hp76-block-screen-hang-on-boot-psu-suspect/9522)
**Author:** [@camsmit1](https://forums.syntaur.com/u/camsmit1)\ **Replies:** 1\ **Last updated:** [August 7, 2026, 3:18pm UTC](https://forums.syntaur.com/t/nord-stage-2-ex-hp76-block-screen-hang-on-boot-psu-suspect/9522 "2026-08-07T15:18:47Z")
Model & revision: Nord Stage 2 EX HP76, PSU board date code 2016 04-09 Symptoms: Unit hangs on LCD initialisation screen (block squares) on cold boot and does not proceed to the Nord menu. Previously rocking the power s… --- ## [Demande de formation](https://forums.syntaur.com/t/demande-de-formation/9520)
**Author:** [@Zikaltofour](https://forums.syntaur.com/u/Zikaltofour)\ **Replies:** 1\ **Last updated:** [August 3, 2026, 12:22am UTC](https://forums.syntaur.com/t/demande-de-formation/9520 "2026-08-03T00:22:10Z")
Salut salut Mr,Je me nome Bertrand Soh,Je réside au Cameroun,Je suis dans le commerce des accessoires pour instruments de musique au Cameroun,mon entreprise en est Zikalto. Je suis très intéressé par l’électronique des … --- ## [On the topic of CS Series Filter IC Yamaha IG00156 and IG00155](https://forums.syntaur.com/t/on-the-topic-of-cs-series-filter-ic-yamaha-ig00156-and-ig00155/9513)
**Author:** [@Travis](https://forums.syntaur.com/u/Travis)\ **Replies:** 1\ **Last updated:** [July 29, 2026, 8:51pm UTC](https://forums.syntaur.com/t/on-the-topic-of-cs-series-filter-ic-yamaha-ig00156-and-ig00155/9513 "2026-07-29T20:51:34Z")
I see a handful of listings on Ebay and mentions on other forums of people supposing Yamaha IC IG00155 is a suitable replacement for the filter IC IG00156 in the CS series. This is a warning that it is not, at least not … --- ## [Roland RD-800 - Repair Diagnostics questions](https://forums.syntaur.com/t/roland-rd-800-repair-diagnostics-questions/9433)
**Author:** [@Sir\_Jeff](https://forums.syntaur.com/u/Sir_Jeff)\ **Replies:** 4\ **Last updated:** [July 27, 2026, 11:51pm UTC](https://forums.syntaur.com/t/roland-rd-800-repair-diagnostics-questions/9433 "2026-07-27T23:51:43Z")
I recently purchased a used Roland RD-800. Upon delivery, I ran the keyboard through some cursory operations and was happy with the sound and operation. After a few hours experimenting with settings, I found several of t… --- ## [Ensoniq EPS - Rare DOC chip needed](https://forums.syntaur.com/t/ensoniq-eps-rare-doc-chip-needed/9506)
**Author:** [@Rob2](https://forums.syntaur.com/u/Rob2)\ **Replies:** 3\ **Last updated:** [July 25, 2026, 5:22pm UTC](https://forums.syntaur.com/t/ensoniq-eps-rare-doc-chip-needed/9506 "2026-07-25T17:22:55Z")
Ensoniq EPS Classic I’m looking to replace a rare DOC chip on a Classic Ensoniq EPS. The one I’m looking for is the one with the green resistor network in the photo if anyone has seen one of these floating around. Than… --- ## [Roland JX3P low buzz noise](https://forums.syntaur.com/t/roland-jx3p-low-buzz-noise/9504)
**Author:** [@Alvaro](https://forums.syntaur.com/u/Alvaro)\ **Replies:** 1\ **Last updated:** [July 22, 2026, 1:45pm UTC](https://forums.syntaur.com/t/roland-jx3p-low-buzz-noise/9504 "2026-07-22T13:45:06Z")
Hello everyone, ive had my JX3P for about 3 years after getting it from someone that said it was serviced by Switched On in Austin though as of recently the JX has made a faint buzzing noise around right center when its … --- ## [Korg Poly 61 Power supply over voltage - Updated schematic](https://forums.syntaur.com/t/korg-poly-61-power-supply-over-voltage-updated-schematic/9512)
**Author:** [@Remodulator](https://forums.syntaur.com/u/Remodulator)\ **Replies:** 0\ **Last updated:** [July 22, 2026, 11:31am UTC](https://forums.syntaur.com/t/korg-poly-61-power-supply-over-voltage-updated-schematic/9512 "2026-07-22T11:31:43Z")
Korg - Poly 61 +/- 15v Power supply over voltage Sharing some technical notes after a successful repair of Korg Poly 61 that had cooked a bunch of op-amps on its synth board, thanks to a power supply that was way over v… --- ## [Arturia Minibrute Keybed Replacing](https://forums.syntaur.com/t/arturia-minibrute-keybed-replacing/9508)
**Author:** [@jsterlin](https://forums.syntaur.com/u/jsterlin)\ **Replies:** 1\ **Last updated:** [July 19, 2026, 3:39pm UTC](https://forums.syntaur.com/t/arturia-minibrute-keybed-replacing/9508 "2026-07-19T15:39:11Z")
\[Arturia\] \[Minibrute 2012\] – \[Keybed Replacement\] I have one of the old Minibrutes that came with the crappiest keybed ever. Got it cheap, but was too damaged to glue all the plastic back together to fix the broken ke… --- ## [Korg Pa600 C256 carbonizado](https://forums.syntaur.com/t/korg-pa600-c256-carbonizado/9480)
**Author:** [@Fco-Machado](https://forums.syntaur.com/u/Fco-Machado)\ **Replies:** 3\ **Last updated:** [July 18, 2026, 11:15am UTC](https://forums.syntaur.com/t/korg-pa600-c256-carbonizado/9480 "2026-07-18T11:15:39Z")
Teclado Korg Pa600 – As teclas não tocam. Apesar disso, tem áudio do ritimo, mp3…Abri a CPU, encontrei um ponto chamuscado( C256 ), preciso do diagrama para conferir as ligações do mesmo. --- ## [Yamaha W7 boot looping](https://forums.syntaur.com/t/yamaha-w7-boot-looping/9509)
**Author:** [@Redbaron1007](https://forums.syntaur.com/u/Redbaron1007)\ **Replies:** 0\ **Last updated:** [July 17, 2026, 9:44pm UTC](https://forums.syntaur.com/t/yamaha-w7-boot-looping/9509 "2026-07-17T21:44:53Z")
\[Yamaha\] \[W7\] – \[Boot looping\] Add tags before posting: brand + model + (optional) fault e.g., korg, models-korg-m1, no-power If your model isn’t listed: use models–tbd (e.g., models-korg-tbd) and post the exact mode… --- ## [Microkorg-s (speaker)edition don't turn on](https://forums.syntaur.com/t/microkorg-s-speaker-edition-dont-turn-on/8094)
**Author:** [@Cristobal](https://forums.syntaur.com/u/Cristobal)\ **Replies:** 3\ **Last updated:** [July 17, 2026, 5:10am UTC](https://forums.syntaur.com/t/microkorg-s-speaker-edition-dont-turn-on/8094 "2026-07-17T05:10:06Z")
Hello friends, I have a microkorg-s, which has speakers included, it is a re-edition of the classic MK1 and they have modified the internal PSU, now it is no longer as it is in the schematic and I can’t find any informat… --- ## [Yamaha An1x LCD replacement... Any options?](https://forums.syntaur.com/t/yamaha-an1x-lcd-replacement-any-options/795)
**Author:** [@Daz](https://forums.syntaur.com/u/Daz)\ **Replies:** 11\ **Last updated:** [July 16, 2026, 9:19pm UTC](https://forums.syntaur.com/t/yamaha-an1x-lcd-replacement-any-options/795 "2026-07-16T21:19:00Z")
Hi all … first post (be kind!!) :wink: I’ve searched the web regarding finding a replacement LCD for a Yamaha An1x… over time the screen becomes dim and hard to read. I’ve read mostly very old posts and apparently the … --- ## [Synth techs in Texas](https://forums.syntaur.com/t/synth-techs-in-texas/9505)
**Author:** [@Alvaro](https://forums.syntaur.com/u/Alvaro)\ **Replies:** 2\ **Last updated:** [July 16, 2026, 8:59pm UTC](https://forums.syntaur.com/t/synth-techs-in-texas/9505 "2026-07-16T20:59:27Z")
Hey everyone, i wanted to reach out and ask if there are any trustworthy synth techs in Texas, specifically Houston. I know syntuar does not really take in repair requests and most of the synth tech recommendations that… --- ## [Roland spd-sx service manual](https://forums.syntaur.com/t/roland-spd-sx-service-manual/9417)
**Author:** [@NoizyGeoff](https://forums.syntaur.com/u/NoizyGeoff)\ **Replies:** 17\ **Last updated:** [July 14, 2026, 2:35pm UTC](https://forums.syntaur.com/t/roland-spd-sx-service-manual/9417 "2026-07-14T14:35:41Z")
\[ROLAND\] \[SPD-SX\] – \[WILL NOT POWER ON\] New to the forum! Does anyone have a service manual for this sampling pad? I can only find one on line for the SPD-S which has a conventional mechanical power switch on the rear… --- ## [Roland JW50 blocked on "Internal RAM initialize?"](https://forums.syntaur.com/t/roland-jw50-blocked-on-internal-ram-initialize/9501)
**Author:** [@TofmkIX](https://forums.syntaur.com/u/TofmkIX)\ **Replies:** 2\ **Last updated:** [July 14, 2026, 1:12pm UTC](https://forums.syntaur.com/t/roland-jw50-blocked-on-internal-ram-initialize/9501 "2026-07-14T13:12:23Z")
Hello everybody. I’m trying my best to re-life a little JW50 (found in very bad conditions), changed some switchs and keys, I’ve tried all the sounds (played some minutes), before disassamble/reassemble for a faulty swi… --- ## [Roland RD300GX Parts](https://forums.syntaur.com/t/roland-rd300gx-parts/968)
**Author:** [@mwl10](https://forums.syntaur.com/u/mwl10)\ **Replies:** 27\ **Last updated:** [July 14, 2026, 12:51pm UTC](https://forums.syntaur.com/t/roland-rd300gx-parts/968 "2026-07-14T12:51:50Z")
Hello, I just picked up a Roland RD300gx Digital Piano. Some of the keys don’t work but that is a fairly easy fix, however, the LED switches under the display don’t work. Most everything else on this board seems ok and… --- ## [Korg Pa5X stuck on the logo screen](https://forums.syntaur.com/t/korg-pa5x-stuck-on-the-logo-screen/9497)
**Author:** [@Pakin](https://forums.syntaur.com/u/Pakin)\ **Replies:** 1\ **Last updated:** [July 14, 2026, 6:50am UTC](https://forums.syntaur.com/t/korg-pa5x-stuck-on-the-logo-screen/9497 "2026-07-14T06:50:59Z")
Hi,I am experiencing a critical boot issue with my KORG Pa5X, and I would appreciate your advice on which internal part needs to be replaced to fix it. Here are the details and symptoms: The Issue: When I turn on the k… --- ## [Remove Cover on Korg Kross-88](https://forums.syntaur.com/t/remove-cover-on-korg-kross-88/9500)
**Author:** [@GrievousAngel](https://forums.syntaur.com/u/GrievousAngel)\ **Replies:** 1\ **Last updated:** [July 14, 2026, 6:38am UTC](https://forums.syntaur.com/t/remove-cover-on-korg-kross-88/9500 "2026-07-14T06:38:59Z")
Korg Kross-88 – Replace DC Power Input Jack Is there an Official Korg Kross-88 Service Manual? Which screws are to be remove to lift off the top/bottom cover? Is it just the outermost perimeter screws? Specific color? … --- ## [Emu E4XT Ultra flash ram kit checksum fail](https://forums.syntaur.com/t/emu-e4xt-ultra-flash-ram-kit-checksum-fail/9499)
**Author:** [@Urge](https://forums.syntaur.com/u/Urge)\ **Replies:** 1\ **Last updated:** [July 14, 2026, 6:34am UTC](https://forums.syntaur.com/t/emu-e4xt-ultra-flash-ram-kit-checksum-fail/9499 "2026-07-14T06:34:04Z")
So, I recently purchased am Emu E4XT ultra that came with an uninstalled Syntaur 10435 16MB flash kit. The installation was uneventful but when I checked the memory it the kit failed the checksum. I uninstalled the kit a… [Previous page](https://forums.syntaur.com/latest.md?page=1) [Next page](https://forums.syntaur.com/latest.md?page=3)