Hey all,
I have an Ion with one octave of keys that do not work, I have searched online but to no avail.
So I'm just wondering if anyone would have any pointers on fixing this with a little DIY
Thanks


J

I haven't seen an Ion, but you'll probably find that there are several ribbon-type cables between the keyboard and the main board. Might be worth trying some contact cleaner and reconnecting. Yahoo Groups are often a good source of information on specific keyboards.

Service manual

Quote BJG145:

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I haven't seen an Ion, but you'll probably find that there are several ribbon-type cables between the keyboard and the main board. Might be worth trying some contact cleaner and reconnecting. Yahoo Groups are often a good source of information on specific keyboards.

Service manual

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cool thanks man
I'll give that a shot

Looking at the service manual, there are two connectors from the keyboard assembly to the main board. I don't know the Ion, but when I had to open my Roland A30 I found that there were actually two keyboard assemblies with separate ribbon connectors. One of the techniques they use to offer different versions of the same synth/controller with different numbers of keys.

So, make sure BOTH connectors or correctly seated at both ends. Part number 40-70-0021 in the manual, 16 pin ribbon cables.

Andy

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When the going gets weird, the Weird turn Pro.

Quote zenguitar:

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Looking at the service manual, there are two connectors from the keyboard assembly to the main board. I don't know the Ion, but when I had to open my Roland A30 I found that there were actually two keyboard assemblies with separate ribbon connectors. One of the techniques they use to offer different versions of the same synth/controller with different numbers of keys.

So, make sure BOTH connectors or correctly seated at both ends. Part number 40-70-0021 in the manual, 16 pin ribbon cables.

Andy

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Thanks
I just checked that they were seated correctly and they are...
No improvement , It's just the keys from C5 up to F5
There are little resistors on the back of the keys, I will check these as soon as I pick up my multi-meter which is elsewhere at the moment.
Any other ideas to what it might be?

Quote jonpuget:

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Quote zenguitar:

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Looking at the service manual, there are two connectors from the keyboard assembly to the main board. I don't know the Ion, but when I had to open my Roland A30 I found that there were actually two keyboard assemblies with separate ribbon connectors. One of the techniques they use to offer different versions of the same synth/controller with different numbers of keys.

So, make sure BOTH connectors or correctly seated at both ends. Part number 40-70-0021 in the manual, 16 pin ribbon cables.

Andy

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Thanks
I just checked that they were seated correctly and they are...
No improvement , It's just the keys from C5 up to F5
There are little resistors on the back of the keys, I will check these as soon as I pick up my multi-meter which is elsewhere at the moment.
Any other ideas to what it might be?

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Those little resistors may well actually be diodes. I know the Fatar keybeds have some kind of diode matrix before going off to the encoder chip (and I do know previous Alesis keybeds were in fact Fatar

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New album 'Fantasy Bridge' available now!
Making of Fantasy Bridge Diary

Quote MarkOne:

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Those little resistors may well actually be diodes. I know the Fatar keybeds have some kind of diode matrix before going off to the encoder chip (and I do know previous Alesis keybeds were in fact Fatar

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Thanks for that,
any idea what might be causing this?

Was it working, and then abruptly failed...? Is the missing octave at one end of the keyboard...? And did you try a factory reset? Doesn't sound hopeful but must be worth a go. Have you checked whether the silent keys transmit MIDI...?