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

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Message

Re: My XL7 won't power up

2006-09-10 by tonyhoneyford

Hya gonz
it seems my sony digital camera won't do close ups....so no 
photo's....anyways I might be wrong about the minor meltdown...its 
just that one of the round black (tin can shaped) module type 
duberries thats wrapped in rubber has a gap in the top like its 
swelled up, and the yellow tape around the transformer coils seems 
like its a bit too crinkly (due to overheating?) but obviously this 
is all supposition.......I recently changed a fuse in my boilers' 
circuit board and discovered it had a secondary fuse on the board 
(encased in a black module type of thing)......surely there might be 
a secondary fuse on the psu board??? I do not think I want to go down 
the multimeter route just yet (not having a multimeter isn't helping)
But if I am getting nowhere with all this by tommorrow I might try 
and borrow one and do as you suggested earlier....
Also...I think I read on an earlier thread that you can't get 
replacement PSUs for xl7s any more?...unless the place you mentioned 
in the midlands knows different....so it looks like the repair route 
is looking the best one......My old freind the tv repair man might be 
able to help us out here.....especially if I can get a dialogue going 
between yourself and him??? 
I also emailed powdec yesterday, but I sent my query to the sales 
guy..and I assume you sent your email as a technical query?  so i 
guess between us we should get some answers tommorrow.... really 
appreciate your help here....In fact if your ever up north you are 
welcome to come and visit our little studio set-up or see one of our 
gigs for free...if you want you can hear one of our old tracks by 
visiting valentine records' free download section on their 
website....ours is no. 12 (I think?) its called morning calls by 
mellowstone(thats our old name) and you can hear some of my xl7 
programming on the track (thats everything except the vocals and 
guitars.....its not a bad track, in fact it was used by a small 
manchester production co. for one of their travelogue films....hope 
you like it....
Enjoy the sunshine while its here....
 ..toe
(xl7@yahoogroups.com, "gonzinigonz" <gonzini@...> wrote:
>
> > the website is a bit ambiguouis.....if you go to the home page, 
> then 
> > click on the tab for the lowest voltage internal PSUs ...you will 
> > find a PTE43-??-c, and this is the one that is referred to in the 
> > audio fanzine magazine....and though it is only 6pin output...its 
> > dimensions exactly match the psu in my xl7 & it looks 
> > identical....
> 
> Looks can be deceiving
> 
> >surely this is the replacement psu for the faulty one?
> 
> Nop.. only a tripple rail not a quad :o( ( 5 if you include the 
> constant 10v rail..)
> Also dosent supply enough current (or not to the same spec)as the 
> original
>  
> > or is this what they used in the later comand stations.....did 
they 
> > somehow change the circuitry for the standbye mode?
> 
> Wouldnt of thought so, i think its just a differant model that 
> someone on the audio fanzine site decided that was the one because 
it 
> looked the same.. which ain't! (though its in the same case and IEC 
> connection and power switch are the same)
> 
> > why does the emu 
> > psu have so many different voltage outputs anyway....no wonder 
they 
> > never used a wall wart transformer thingamajiggy....
> 
> These are the voltage rails it needs to work, thats the way it is.
> 3.3v and +5v for logic, ram, DSP, CPU, LCD etc
> +/- 12 for the analogue audio stuff (and the 12v gooseneck lamp on 
> the front!)
>  
> >  I will mail you a photo of the psu showing what I think are 
> > symptomns of minor meltdown/overheat....
> 
> Please do, high res photos good. upto say 6mb fine.
> You've got the email.
> 
> Cheers
> Gonz
>

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