Emulator II: Supply Rails and PSU Harness Colour Codes

[HideawayStudio]

I make the test of tension of power supply
If I test it to the outside of the box
I am forced to disconnect the two connectors Voltage 110/220
What is the voltage in this case the original that I must provide 220v/110v
I think my Emulator II + original EUROPEAN

When the two wires to the 110/220 selector switch are disconnected, the PSU is setup for 220V operation.

[dr.c]

False, it explodes !

Too bad...

[HideawayStudio]

False, it explodes !

Too bad...

What??  The PSU is without question set to 240V with the voltage selector wiring removed - mind you - I have to admit those EII PSUs have a habit of going up just looking at them - they're 'orrible!!

[DARKSHINE]

I find this:   http://www.synther.org/emulator2.html

a new power supply with a fan     ! ! ! ! !

If you find the model which was used to make

I read   T-...   ?

[ddvdave]

I find this:   http://www.synther.org/emulator2.html

I think I found it -- it looks like it's a MW (MeanWell) T-60C.

See here:

http://www.meanwell.com/search/T-60/T-60-spec.pdf

-Dave

[Elmbeatz]

Cool!

Can someone tell the difference between T60-C and T60-A ?

EDIT: Sorry, found it.

[who]

I reached out to Carlos, the Technician who performed the power supply replacement mentioned here:

http://www.synther.org/emulator2.html

He shared the following info with me:

The EII in my website is not mine, it was a repair for a customer, the same than the other machines listed.

"I installed a "Mean Well T-60C" (http://eu.mouser.com/ProductDetail/Mean-Well/T-60C/?qs=V9a8iPeg90zlDGU%252btuqvCw==),
which generates 5V at 5Amps, +15V at 2Amps and -15V at 0.2Amp. This requirements are very basic in switching PSU's, you will easyly find a PSU with that power and voltage arrangements. This one was about 50€ in the shop I bought it.

The replacement is straight forward but you may have to make new holes in the subchassis for attaching the new PSU.

The connections depend on the PSU you use, but generally they are screw terminals.

Feel free to copy this text in the thread

Best regards,
Carlos."

[kdk]

I installed a Meanwell T-60C and it appears to be working well. I don't have any floppy drive in it, just a HxC Rev. F, so I don't need a 12V supply line.

I think the price for the PSU is about $35 plus shipping from Jameco.com.

[who]

I just installed a T-60C in my EII and all of the problems appear to have gone away.  Thanks to Carlos and others for their help!

(One of the strangest problems was with the first fader/slider:  The effective range kept getting shorter and shorter.  I bought replacement sliders, but no need to install them now.  Update:  I was wrong, the slider started acting up again, but all the other problems have gone away since installing the new power supply.)

[Elmbeatz]

Would a MeanWell T40-C also work?

Greetz,
Elm.

[lunatic]

The T40-C might not have enough WATT to power the EII. T-60c supplies 62.5W, the T-40c only 40W...

[Elmbeatz]

Thanks for replying!

The T40-C might not have enough WATT to power the EII...

Is that for sure?

May I try it out nevertheless without harming the baby?

[Elmbeatz]

Anybody?

Dr. C ?   

[kdk]

The T40-C might not have enough WATT to power the EII. T-60c supplies 62.5W, the T-40c only 40W...

I just powered up my EII with the Meanwell T-60C PSU in it and it draws 48-50 Watts. That's with a HxC and no Floppy or hard drive in it.

The T-60C is rated for 62.5W.

Perhaps the Meanwell TP-75B would be a better choice? It's rated at 75 watts which would give a bit more headroom.

[Elmbeatz]

I see.

Well, I shot 4 of those T40Cs for just a bit of money, so...