emusonacid! legacy

by **JAHFUNK** » Thu Mar 21, 2013 2:39 pm

Thanks for the info mosrob
I have ordered the SunPower SPS 060P-T2 60W now, but the 100W one would have been more sturdy.

I'm sure as time goes by this thread will be invaluable to users with these ageing samplers when they need power replacements.

The 60W one should be well up to the job but anyone looking to do this mod in future might consider one of the even more beefy 100W models that mosrob has mentioned.

by **JAHFUNK** » Wed Mar 27, 2013 3:01 am

All parts on order. I'm still waiting for a couple of parts to arrive and feel about ready to perform the surgery.

I think I can follow all the wiring in the description, but just to be sure I have a couple of things I would like clarified.

Fitting the power supply

quested208 wrote:you can see the coloured wires and the matching places on the terminal board ! PIC 7

Question 1
Are the two green wires connected to the power supply in the opposite way to the red connector, just as all the other wires are?

Fitting the rear fan

quested208 wrote:the original emu-fan-plug is a 4 pin. this fan has a 3 pin connector…..so cut one edge/nose away see - PIC 14 !

Question 2
It looks like the rear fan has 2 cables, which ones connect to which pins on the Mother board?

Alternatively - Could the rear fan be wired straight to the PSU on the same rail as the blue internal fan ( see pic 7), or would this be placing excessive demand on this rail?

Anyone able to clarify these points?

by **ja-ki** » Sat Mar 30, 2013 12:38 pm

@fan connector: the red wire has to go to the 12v pin on the mainboard, you won't need the yellow wire coming from your fan as this has something to do with fan speed management (telling the computer at what rpm the fan is rotating).repeat: the both red and black wires have to go the two pins in the middle, red going to the 12v pin.

cheers! :)

by **JAHFUNK** » Sat Mar 30, 2013 7:29 pm

@ ja-ki
Thanks for your answer.
One down one to go.
I'm a bit of a noob with the internals. I'm getting better as time goes by, learning as I go.
I have managed to fit a removable IDE hard drive and build an external IDE to USB dock for transfers, but messing with the power supply could be potentially disasterous to me and my ultras health.

Anybody able to answer the first question?

by **ja-ki** » Mon Apr 01, 2013 1:23 am

Hi,

I'm no expert in electronics either, but as you can see on the powersupply there's a label defining the outlets.
The green ones say "GND" which means ground, so 'actually' there's no voltage on them, so it shouldn't matter which way round you connect them on the mainboard. The other ones a pretty obvious

cheers

by **JAHFUNK** » Mon Apr 01, 2013 10:48 am

Thanks for that.
Now I'm confident to mod my Ultra once the parts arrive.

by **Ommatidium** » Mon Apr 01, 2013 2:26 pm

JAHFUNK wrote:Alternatively - Could the rear fan be wired straight to the PSU on the same rail as the blue internal fan ( see pic 7), or would this be placing excessive demand on this rail?

Hey Mark,

Just to give you an answer for the above question: Yes, you can do this. The load on the +12v rail should be (more or less) identical whether you use the motherboard header or the PSU terminals, so there's no risk of damaging anything.

by **JAHFUNK** » Tue Apr 02, 2013 2:09 am

@ Ommatidium
Yes.
So you're saying....
The rear fan connects to the 12v pin on the E-MUs motherboard, this is connected to the 12v rail, so users could just bypass the motherboard and go straight to the 12v rail on the PSU.

Particularly as the motherboard doesn't control fan on/off or fan speed!
You could consider the motherboards voltage pathway a redundant detour, and go straight to the PSU instead.

by **quested208** » Wed Apr 03, 2013 11:18 pm

hi ! please accept my apologies for my delay in responding.

ja-ki wrote:Hi,

I'm no expert in electronics either, but as you can see on the powersupply there's a label defining the outlets.
The green ones say "GND" which means ground, so 'actually' there's no voltage on them, so it shouldn't matter which way round you connect them on the mainboard. The other ones a pretty obvious

cheers

correct !!

Ommatidium wrote:Hey Mark,

I fitted one of these a few months back. Unfortunately, Quested208's bracket is an adapter rather than a heatsink. As I remember, all of the PSU's threaded mounting holes are on the narrow edge rather than the backplate/bottom. Here's a line drawing showing how they're positioned (from a PDF on Conrad's site):

In light of that, I followed Quested208's L-bracket method because I couldn't see an easier way of doing it.

no heatsink ! yes ! the original PS had 43 watt, the new 60 watt is not going to the limit ! with the fan on it.....you will never get heat problems ! the airflow ist muuuch better as the original design ! the device is one of the coolest parts in my studio AND nearly noiseless !! the fan´s and the 2,5" HD are very quiet.

the alu-L-bracket is easy to build, buy the new PS and you will see the bottom threads on it, take a sheet of paper and make a pattern ! .....you will see and understand ! it´s not difficult !
only 3 drill holes for the PS and 3 threads in the L-bracket - in germany M3 - that´s it !

i own 2 e4XT ultras and one 6400 ultra, i moded an older e4X as well...all 4 samplers are modified and in daily use ! no problems ! :-)

Ommatidium wrote:It may be possible to drill/modify the Sunpower chassis to mount it directly onto the E-mu, but you'd want to be sure there is enough clearance beneath the PCB.

1. nice idea, but too much work and the drill work is a little bit dangerous for you - electric shock - and for the PS !? 2. you will loose warranty !?

best regards ! may you do well !

by **JAHFUNK** » Wed Apr 03, 2013 11:33 pm

Thanks for your reply quested208
Do you think that the rear fan could be connected directly to the 12v rail of the PSU?

by **quested208** » Thu Apr 04, 2013 3:26 pm

JAHFUNK wrote:Thanks for your reply quested208
Do you think that the rear fan could be connected directly to the 12v rail of the PSU?

you're welcome !

the connector on the bord provides the 12 v for the rear-fan, no speedcontrol or stuff like this ! i´m not a electronics technician, more the mechanic side...

but to my knowledge, it makes no difference to provide the 12 v for the fan by conducting tracks or real wires !? so.... why not !?

on pic 14

http://imageshack.us/f/171/11609739.jpg/

you can see my plug modification...i croped one edge from the fan-plug with a sharp cutter ! you can see the correct match on the pics right side - the small frame !! ...my way !? but you can
plug in the 2 wires also directly to the PS !

Ommatidium wrote:The majority of the E-mu's power draw (for the motherboard, RFX, options, etc.) will most likely come from the 5v rail, so I suspect you could actually power quite a few fans with the 12v rail. With regard to the hard drive... As far as I know, most 2.5" drives are 5v only so it shouldn't burden the 12v rail.

Anyhow, to be a bit more precise about it:

Mini Kaze - 0.07A
Noiseblocker - 0.24A

The PSU can apparently supply 3.5 amps on the 12v rail, so the 2 fans are only drawing <10% or so of the maximum. There may well be some other bits powered by 12v (the display, perhaps?), but I don't think running 2 fans will cause any problems.

i agree with that ! the little inverter ON the board, for the backlight - behind the display - takes 12 V too, if i'm not mistaken.....by the way....

the new, oversized PS looks sturdy with decent parts !

so...keep cool and collected ! ;-)

best...

by **drayon** » Thu Apr 04, 2013 4:40 pm

Wow too much effort.

The replacement power supply is manufactured by PowDec Technologies (USA), Inc.; 65watt; series: PTH65; model: PTH65301

Full specs can be found here: http://www.powdec.com/

by **mosrob** » Thu Apr 04, 2013 5:37 pm

Are the PowDec Technologies PSUs available in Europe?
The products of SunPower and TracoPower are available through a European supplier via its web-shop and also at local stores. There is even one store in my home town.

by **drayon** » Fri Apr 05, 2013 3:14 am

msrob, you can contact PowDec and they will supply with a list of distributors in your area.
This is the power supply E-mu were using to replace the PSU's in some Ultras in a specific serial number range that were not powerful enough to handle the RFX options.

by **Solitaire** » Thu Apr 11, 2013 6:49 am

drayon wrote:........
This is the power supply E-mu were using to replace the PSU's in some Ultras in a specific serial number range that were not powerful enough to handle the RFX options.

SURE !???

emusonacid! legacy

Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial

Re: Ultra Power Supply Replacement - 2,5" internal HD - Tutorial