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Akai S1000 / S1100 samplers

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Message

Re: replacing inverter (electronic inverter?)

2012-09-13 by corey_keller@rocketmail.com

I appreciate the reply and its thoroughness. If you have no idea what you're doing, I have even less. The electronic inverter seems like something i don't want to mess with. I was thinking maybe somebody had tried this already and could explain it to me but that doesn't seem to be the case.

If anything, i'd try my luck with the classic inverter. I was under the impression that if i got this unit: http://www.backlight4you.com/product_info.php/info/p777_5-Volt-Inverter-for-EL-Panels-up-to-105cm2-area.html

...I would have to solder it to the PCB inverter board in place of the old off-white unit. Though if i'm understanding what you're saying correctly, this item from backlights4you would replace the stock PCB unit entirely?


--- In akaiS1000S1100Samplers@yahoogroups.com, "wavestation1" <turkeyshoot@...> wrote:
>
> Oh man if we can get a 5v electronic inverter working then there are thousands of old synths and rack units out there that need one.
> 
> My Korg Wavestation for a start - it whines like hell.
> 
> I talked with the guy at Backlight4You about the electronic one that he sells and he felt that running it at 5v would be at the limit and it might not last all that long.
> 
> I do have some info about another inverter chip that can run on voltages up to 10 or 12 volts but I haven't got round to trying to build a prototype yet. Truth be told I don't know what I'm doing - don't know what the coil and caps etc actually do, so I would be building it off a suggested circuit design. It only has a few components and looks simple, but...
> 
> EL panels will work at a wide range of AC voltages and frequencies they will just have a particular voltage and freq where the brightness vs life is optimised. However these inverter circuits can be made to optimise brightness, lifespan or even for minimum current draw.
> 
> For the Wavestation I want to keep the current draw as low as possible and I don't mind losing a bit of brightness. There's some ratio between volts and frequency to determine the brightness.
> 
> That other inverter at Backlights4You is a traditional type inverter with a small transformer in it (this is the thing that whines as it gets older) but it's fully encapsulated so could be pretty good and quiet. Looking at the schematic of the Akai inverter there are a couple of components on the little PCB and also a transformer inside a plastic cover. I'm assuming that these components are already inside the Backlights4You inverter. The other thing is what are the specs of the Akai inverter - AC volts and frequency?
> 
> The Backlights 5v traditional inverter should work though it may not be at the right level for optimum brightness, or it may be too bright and the EL panel will wear out quicker. From what I have read most EL panel inverters are around the 100v AC at 400Hz sort of level, so it should probably be close enough.
> 
> Sorry to go on, but I would love to solve this inverter problem and start to put electronic inverters in my equipment as they start to get noisy.
> 
> Cheers
> Raph
> 
> --- In akaiS1000S1100Samplers@yahoogroups.com, "corey_keller@" <mr.coru@> wrote:
> >
> > I think my inverter has seen its day. I haven't had the s1100 for very long, but when i got it, the backlight was dead and the inverter was super loud. I promptly replaced the backlight and the inverter quieted down to a gentle hum. It has been less than a week since i've replaced the backlight and it already seems less dim, but worse, the inverter it starting to get obnoxiously loud again especially after the unit is powered on for more than 10 minutes. I figure this is the inverters fault. If you guys agree with my diagnosis:
> > 
> > 1) has anybody had success installing an electronic inverter? (this exact model was linked to in another topic)
> > 
> > http://www.backlight4you.com/product_info.php/info/p915_3-Volt-Inverter-for-EL-Panels-up-to-60cm2-area.html
> > 
> > 2) what about this one? would it work?
> > 
> > http://www.backlight4you.com/product_info.php/info/p777_5-Volt-Inverter-for-EL-Panels-up-to-105cm2-area.html
> >
>

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