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E-mu Proteus Teardown, Power Supply (PSU) Replacement and Factory Demo Tune 

Desert Synth Guy
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The E-mu Proteus family of synthesizers was developed and sold from 1989 for over a decade. They were hugely successful and used extensively in films, television productions and computer games. The basis of this success was a low price point, for the time, and the fact that many, if not all, of the waveforms came from the revered and extremely expensive E-mu Emulator III.
These units are still valid in current studio setups and these synthesizers provide their own unique sound that sits well. They have extensive editing capability and, despite the limited screen, are intuitive in their use with not too much menu diving.
This video focuses on the Proteus/2 and, specifically, the power supply, which is a common fail point in these units. The Power Supply can be easily replaced with a cheap, readily available and reliable alternative.
And, of course, the factory demo tune !
Timestamps:
0:00 Intro
0:15 Description
2:23 Top off !
6:48 PSU Replacement Description
16:48 PSU to Main Board Cable Explanation
17:47 Factory Demo Tune

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21 июл 2024

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Комментарии : 16   
@push-pull3647
@push-pull3647 4 месяца назад
Excellent video ! 👍Thanks for the colors at 16'45 ! It helped me a lot to bring my Proteus back to life ! 🤩
@danlarge5729
@danlarge5729 4 дня назад
Thanks for putting this out.... good info, and I now have the supply and am doing the work tomorrow night! Maybe you can add video to this about mounting the Meanwell, as the holes are not aligned, but I plan to get nylon spacers/nylon machine screws, and drill holes in the bottom and make the 4 mounting spots for the meanwell, sitting on 4mm spacers.
@desertsynthguy
@desertsynthguy 4 дня назад
Excellent idea. I'm about to replace the PSU in a JV5080 with a meanwell. I'll include the mounting. Good luck with replacing the power supply.
@Nkrypth
@Nkrypth Год назад
Good informational video! Great job!
@desertsynthguy
@desertsynthguy Год назад
Nice hack for the marimba sound
@LittleRichard1988
@LittleRichard1988 Год назад
I bought a Proteus/2 earlier this year but mine is one of the later models that has the word Orchestral on it in yellow text and I think the caseing and buttons are a slightly different colour. Mine also has the updated firmware from 1992. The good thing with the updated firmware is that it's supposedly easier to initialize by pressing a combination of buttons before you reload the factory patches which I had to do to get back the Whisteling Joe patch that was used on X files as that was one of the reasons I bought this. I was also going to get the Proteus/1 or Pop/Rock module but didn't for a number of reasons partly because reloading the patches via Sysex is a pain but also as I only wanted it for it's marimba sound I figured out an alternative way of recreating it very closely on the Proteus/2, you just assign the xylophone tone to both parts on patch 70 which is supposed to be a synthesized marimba.
@desertsynthguy
@desertsynthguy Год назад
They are great modules- vastly underrated
@50CJAZZ
@50CJAZZ 5 месяцев назад
I got a proteus 2 module like yours but it doesn’t say ORCHESTRAL on it. Is there a difference in the sounds and patches?
@LittleRichard1988
@LittleRichard1988 5 месяцев назад
@@50CJAZZ The patches are exactly the same as the original patches but modules with the word "Orchestral" have an updated firmware. The Protues/2 XR does have extra patches in addition to the original Proteus/2 patches.
@MrDeltaboys
@MrDeltaboys Год назад
Hi I have a Proteus 1, sounds we’re very distorted so I presumed the battery was dead so I’ve had it professionally replaced, alas when I get it home, all sounds still distorted, any ideas please & thanks
@desertsynthguy
@desertsynthguy Год назад
My first port of call is always the Power supply unit - make sure that the voltage rails are correct as this can cause all sorts of havoc. Check the caps in the output stage. Generally not the DACs as these just fail outright. I have come across failed flip-flop ICs that can cause distortion - a cheap fix, but takes time to diagnose.
@RaquelFoster
@RaquelFoster 7 месяцев назад
Did you just get a standard Hitachi-type 16x2 screen and manually solder all the wires? I think it’s 2 pins for the light and 14 pins for the screen?
@desertsynthguy
@desertsynthguy 7 месяцев назад
The screen is soldered to the front pcb panel with a header, so there is no wiring to solder, per se. The 2 pins for the ligth are not used as the replacement is an OLED screen. The header needs to be desoldered and then the screen can be removed from the panel. The new screen needs the header soldering to it and then the header soldered onto the pcb. I got the new screen from: www.synth-parts.com/en/products/displays-und-led/display-sets/6484/e-mu-proteus-oled-display-new. Comes with instructions for installation.
Месяц назад
Do you have the link for the replacement screen?
@desertsynthguy
@desertsynthguy Месяц назад
The screen is soldered to the front pcb panel with a header, so there is no wiring to solder, per se. The 2 pins for the ligth are not used as the replacement is an OLED screen. The header needs to be desoldered and then the screen can be removed from the panel. The new screen needs the header soldering to it and then the header soldered onto the pcb. I got the new screen from: www.synth-parts.com/en/products/displays-und-led/display-sets/6484/e-mu-proteus-oled-display-new. Comes with instructions for installation.
Месяц назад
@@desertsynthguy thanks a lot!!
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