JD-800 Software / Patches:
Patch Organizer
Free Patches
JD-800 DAC Calibration:
A noise can occur during long release times. If this is the case, you will need to calibrate the unit. Noise itself is the result of improperly trimmed DAC (digital / analog converter). Type of the noise we discuss here sounds somehow like a bitcrusher or a bad working noisegate – it’s not the hiss we talk about here. Here’s the procedure:
- To Enter the Test Mode select Multi-Mode
- Press and hold: Cursor Left, Cursor Right and then Exit buttons.
- Use an instrument such as an oscilloscope to observe the output waveform of MIX OUT L on the rear panel. If you don’t have oscilloscope, you can use headphones and listen carefully with your ears.
- Press [NUMBER 7] while holding down [EXIT].
- A sine wave with a relatively low sound volume should be output.
- Make it a smooth sine wave by adjusting VR1 on the Jack board.
JD-800 Factory Reset
Warning: this will delete all of your presets. Please dump them via sys-ex before doing this procedure
- Press data transfer.
- Page up to select factory preset.
- Press YES.
- Done.
JD-800 Brochures:
Hi, re DAC, I get a crackling distortion sound as the effects fade away. I hadn’t investigated if it was a particular effect, but by using the Direct Outputs, dry, I get no crackling. Could that be the DAC? Thanks.
I don’t know.
hi there…this is due to damaged fx-ram (LH2464-10)
swap them and all is fine again. 😉
Hi Nik,
Where I can find the fx-ram? Saw it is by Sharp but discontinued now,
Thanks!
Help!! I just got myths back from repair of audio output and all slider will only register kin and max values. Is there a way recalibrate or fix??
Hello,
I have purchased a Roland JD800 Synthesiser.
Unfortunately, It needs A new PCB! (Contact Board) – It’s the large green flexible ribbon that gets hit by the keys.
I also need a new Connector Board.
I was given your details from a friend of mine – who said you could help – and although the JD 800 original ‘spare parts’ are not made anymore – she said that there are some Roland spares – that will fit into the JD800, (see below):
RL-22935230 Contact Board (flexible strip)……..NOS 49.16 58.50
RL-00784978 Connector Board…….. NOS 24.75 29.45
RL-00784989 Flat Cable 42cm/26-p……..NOS 9.87 11.75
These are spare parts that work in the JD800 – and so I am told – are still being manufactured by Roland at this present time – however… These are proving extremely difficult to get hold of!
Problem:
There is a flex circuit clamp on the ‘keyboard bed’ that clamps the two green ribbons. The CIC cable cannot be detached as it is/was thermally sealed to the contact board – ironically, someone before me tried to take this apart and thats why the keys sound intermittently or stuttered/spluttered.
Consequently, the ‘internal signal layers’ (at the end of the thermally sealed cables) are now broken and it cannot be fixed (due to the thermally sealed design).
Where can I get these spares…?
https://supersynthprojects.com/home/coming-soon/?fbclid=IwAR2S92kOKmtsTMHY4sFsA_p–LQad7Mww76IYtwbEAtTBtwTpgNpeEKYrrs
I’m trying to load sysex banks onto my JD800, using MidiOx or Bome SendSx. No luck. Is there a setting on the JD800 I am not aware of? The “receive sysex” is set to ON-2. Please help.
Use midi box, a free program. It works with mine
I can’t locate this VR1 pot on the jackboard. There is nothing marked VR1? All I see is four pairs of pots marked LC1,2,3 and 4
Hi
JD-800 can be used as a midi controller to edit sounds of a JD-990 very simply.
I try to edit the XV5080 but I can’t. In my mind it could be possible because all these devices are closed and should share the same cc and exclusive message. At least for basic function like cutoff, resonance…
Am I wrong ?
Is there any possibility to do that ?
Stay at home
San
I don’t have XV-5080. I can’t test this.
Hello Don,
Pleas do you have Roland JD800 22935230 contact board assy.
Thanks!
I am a sound designer, not an expert in servicing.
Hey there, I have a JD-800 that needs some help 🙁
I need the following parts:
* Contact PCB – Roland part #22935230
* Adapter Board is part #00784978
Any help would be appreciated.
I am a sound designer, not an expert in servicing.
Guy Wilkinson has solved the issue once and for all.
https://supersynthprojects.com/home/coming-soon/?fbclid=IwAR2S92kOKmtsTMHY4sFsA_p–LQad7Mww76IYtwbEAtTBtwTpgNpeEKYrrs