Emu XL-7 & MP-7 User's Group

Hello,

thanks to all of you who replied to me both on- and off-lists. After
the CS died I didn't have time (yet) to use my other CS, which is
still working, as a temporary PSU donor, just to make it 100% sure it
actually *IS* PSU, but I think I should know it soon.

2012/10/31 duncan <ferrograph@aol.com>
> I have both too, but my rack modules are in another country.... I suspect, however, that the psu in the command stations is a bit higher rated, not least because there's a lamp socket on the thing, besides the extra complexity & boards.
>
> in any case, the tech-minded can quickly figure out that these boxes just need "12s & 5s" presented in the right order & in the right quantity, so to speak. in other words, it's more-or-less a commodity switched-mode psu in there. sometimes these things have a small paper label, usually on the biggest condenser or on the side of the tiny transformer, declaring their rated outputs.
>
> I had a psu fail in a rack module & replaced it with just such a commodity psu. had to juggle the wires around at the edge connector, but everything worked fine.

The trick with the CS is that it has the switch on the back side of
the PSU (and the corresponding hole in the rear panel). I will ask a
friend of mine if he could just take a look and repair it. If not, I
will probably resort to finding a decent (commodity) replacement.

Thanks again,

Bruno

2012/10/31 Bruno <brunorc@...>:
> the CS died I didn't have time (yet) to use my other CS, which is
> still working, as a temporary PSU donor, just to make it 100% sure it
> actually *IS* PSU, but I think I should know it soon.

Yes it is. I swapped the PSUs and everything is OK. I looked into the
broken one and cannot see any obvious damage. Also, I consulted a
friend of mine (too bad he's 1000 kms away) and he said that ATX PSU
probably won't do without modifications, since CS PSU feeds 10V on pin
2, and this voltage is not present in ATX.

So, my XL-7 is back, but our "Orbit-7" (which is my empty MP-7 shell
filled with TSCY/Beat Garden/Ensoniq Project ROMs which belong to the
bandmate) is now dead. The mentioned friend is able to help, but that
would add an snail-mail overhead, so I'm going to ask a local
colleague if he could help. In any case, I will provide the info what
broke :-)

Cheers and thanks for your support,

Bruno

----- Original Message -----

From: Bruno

To: xl7

Sent: Wednesday, October 31, 2012 14:49

Subject: [xl7] Re: [p2k] Re: PSU dead

 

2012/10/31 Bruno <brunorc@...>:
> the CS died I didn't have time (yet) to use my other CS, which is
> still working, as a temporary PSU donor, just to make it 100% sure it
> actually *IS* PSU, but I think I should know it soon.

Yes it is. I swapped the PSUs and everything is OK. I looked into the
broken one and cannot see any obvious damage. Also, I consulted a
friend of mine (too bad he's 1000 kms away) and he said that ATX PSU
probably won't do without modifications, since CS PSU feeds 10V on pin
2, and this voltage is not present in ATX.

So, my XL-7 is back, but our "Orbit-7" (which is my empty MP-7 shell
filled with TSCY/Beat Garden/Ensoniq Project ROMs which belong to the
bandmate) is now dead. The mentioned friend is able to help, but that
would add an snail-mail overhead, so I'm going to ask a local
colleague if he could help. In any case, I will provide the info what
broke :-)

Cheers and thanks for your support,

Bruno