So it would suffice, but in the long run a higher ranked diode would be safer? Is that what I should be getting at? Or is it that you mean that the Keyboard its self may get a overdose amount of power to work in general? I can always buy another diode I just had a few of the 1N4001 around. I'm sayi...

Could be a loose power jack and/or short to chassis ground and/or PCB flex. It's hard to say how much to budget, although I would suspect it's an easy fix once the problem is determined. But any tech is going to charge you a certain amount to even put it on the bench, most likely, so who knows? I do...

Would a 1N4001 function as a replacement? Thank you for your time. As far as being true to the original circuit, you can answer that yourself just based on my last post and then looking up the specs for the 1N4001. But... I don't know that the original actually needed to be that high voltage, so it...

megamanx wrote:An ensoniq esq 1 for 40 bucks and a E-mu Emax for 70.

It must be nice to be surrounded by fools and/or desperate junkies I already have those in my own arsenal, but still envious at the sweet score!

If you're asking what the original part was, I believe it's an SR1K-2 diode. If you're looking for a replacement then I think anything rated over 1A, 600V should suffice, so... if you've got any 1N4005, 1N4006, 1N4007 or NTE116, etc. around then that would probably do the trick -- about as garden va...

Have original print versions (not copies) of all three service manual pieces for the Akai S900 / ASK90: - Service Manual Booklet - Schematics (Voice PCB, PSU, Jack/Panel/Display Boards, and other minor components) - CPU Addendum The CPU addendum is the rarest, and I am unaware of any digital copy of...

I have to confess that your situation isn't making much sense to me at the moment. Those keys--and only those specific keys--shouldn't have died all at once like that. I feel like there should be more dead keys or some other important information is missing from what's going on. I say that because o...

splagoot wrote:Hopefully that helps figure out what the problem is. I did try unplugging the keyboard, but the problem still stands.

Still need the rest of the info.

I cannot find the model, which would replace the above-mentioned DM16020 size-wise. Questions: There are three concerns in this process: 1. Dimension wise (which model would fit?) 2. Which interface / BUS / protocol is Roland S-330 using? (6800, 8080 or SPI) 3. The Wiring / Pin mapping. I don't hav...

Anything that can record and playback audio will do, pretty much.

We need more information to give a real response: Can you identify the actual, specific keys? Starting from the lowest to the highest, like "C2, F#2, D3..." or whatever the case may be. It very well may be relevant. Also, when you say, "have been" going dead... does that mean they all die and come b...

I love the dedication! Thank you for the project updates.

Just thought it was kind of funny that someone can not fathom selling anything without it's adapter yet have a massive collection of them that don't go to anything. :lol: Well, I recognize it as a phenomenon, for sure. I just don't understand the human motives/foibles behind the phenomenon. Like......

I know some of it (maybe all of it...) is to force customers to buy THEIR adapter but if this really were the case they could be way more dickish and have uber specific interfaces (i'm looking at you Mutron III creator Well, to be fair, I'd say manufacturers/engineers generally have some kind of re...

My approach is to use one of those multi-voltage multi-tip universal adapters that was mentioned to verify the barrel size and that the device actually works. Then I find and replace with a permanent adapter as I acquire them or discover them in my "back stock". But then again, I'm comfortable mixin...