Emax

Ok. This is what happend! 

I pulled out the mother board of the SE keyboard and put it into the emax rack. 
On the emax rack startup the top row in the display showed black blocks. I had put the IDE(?) cable to the analog board wrong. After I changed its position the emax rack turned on, loading emu software and generated a loud noisy, crackling sound which faded away after 10-15 sec. Then when I played some notes same thing happend as before but this time very loud noisy/crackling sounds. Then it stopped generating anything at all. No sound. 
So I switched the rack off and just for fun switched places on the left and right audio cable. On startup it generated this ugly noisy, crackling sound but the software froze on the message "Loading software". I switched it off and reassigned the audio cables. Now it loaded the software ok but no sound. No noise no crackling sound.
Then I pulled out the analog board from the SE keyboard and put it into the rack. Everything works well now on the rack. 
The strange thing is that when I put the exchanged analog board into the keyboard and turned it on... the display woke up? And when I look at the rack's display...it actually have some shimmer. Don't think it was any shimmer before but i might be wrong. 

The SE keyboard E-chip differed from the rack's E-chip. The SE E-chip had a piggy back thingy on it and the rack didn't. I've got some pictures of them if needed. 

So... do you think it can be the DACs? 

regards
Kalle 

--- In emax@yahoogroups.com, "jammie" <jammie.emma@...> wrote:
>
> no as its mother board dependant just means that the one with se is hd ready os supported 
> 
> as if you want to have an hd conversion the os eprom has to be upgraded to se first before the hd os will work
> 
> so stick the se version mother board into the rack then you will have a working emax 
> 
> also you can tell me if it exibits the same problem if it does then the audio 12bit dac could be fualty
>   ----- Original Message ----- 
>   From: windefalk 
>   To: emax@yahoogroups.com 
>   Sent: Wednesday, May 30, 2012 7:47 PM
>   Subject: [emax] Re: Damaged Emax in transit. Need advice to get things fixed.
> 
> 
>     
>   Ok. So it doesn't matter if the keyboard has the SE upgrade and the rack doesn't?
> 
>   --- In emax@yahoogroups.com, "jammie" <jammie.emma@> wrote:
>   >
>   > remove the motherboard from the keyboard and fit it to the rack
>   > 
>   > so you have 1 working machine as your going to trigger it from a midi keyboard
>   > 
>   > yes the diodes can be replaced they are just signal diodes and are still available cheap from most stockists
>   > 
>   > jammie logan
>   > 42 glastonbury crescent
>   > walsall
>   > ws3 2rf
>   > united kingdom
>   > ----- Original Message ----- 
>   > From: windefalk 
>   > To: emax@yahoogroups.com 
>   > Sent: Wednesday, May 30, 2012 6:46 PM
>   > Subject: [emax] Re: Damaged Emax in transit. Need advice to get things fixed.
>   > 
>   > 
>   > 
>   > Thanks for the quick reply. 
>   > Can I fix or get those diods fixed somehow? 
>   > It's not a big deal since I have a MIDI keyboard to control it with. 
>   > 
>   > The display doesn't cause any noise now since it's not working =) 
>   > I guess that the inverter is broken but I will check with a multimeter tonight.
>   > 
>   > I guess I go for the VFD then. =)
>   > 
>   > Great Jammie. Where do I send the board? 
>   > 
>   > Regards
>   > Kalle
>   > 
>   > --- In emax@yahoogroups.com, "jammie" <jammie.emma@> wrote:
>   > >
>   > > the diodes are damaged for those keys when ytou press that key it triggers the diode but does not release hence the long decay
>   > > 
>   > > it would also mean that certain keys in he same octave could suffer from the same problem
>   > > 
>   > > with the dispaly if its gt a high pitched wine then the efoil has gone and the transistor and stepup transformer are cuasing this wine
>   > > 
>   > > replace withvfd or oled certain oled have the same connection so its a easy job
>   > > 
>   > > but they only have a life expectancy of 5years which is less than an efoil backlight
>   > > 
>   > > the vfd displays last a very long time my esq1 nearly 30 years old still works with no problems
>   > > 
>   > > noritake itron uk is were i get my vfd but they have a european office
>   > > 
>   > > as with the fualty mother board send it to me ill look at it i have spare echips
>   > > 
>   > > so can test to see whats wrong with the board from the wave file your just getting white noise but the filters and vca are shaping the white noise into transient shapes 
>   > > ----- Original Message ----- 
>   > > From: windefalk 
>   > > To: emax@yahoogroups.com 
>   > > Sent: Wednesday, May 30, 2012 5:34 PM
>   > > Subject: [emax] Damaged Emax in transit. Need advice to get things fixed.
>   > > 
>   > > 
>   > > 
>   > > Hi!
>   > > 
>   > > I'm new to the group and new to using Emax. =)
>   > > 
>   > > I received an faulty Emax 1 rack from a friend for about a month ago. It was shown (with Jammies help here on the forum) that the Echip possibly is dead, but there is a chance that a calibration can solve the problem!?
>   > > 
>   > > I do not like to wait so I bought an Emax 1 SE keyboard a week ago. It was, according to the seller fully functional but has been damaged in transit.
>   > > 
>   > > The damages are: 
>   > > 1) The display is dead. In the ad for the emax keyboard the seller described that E-mu factory had repaired the display which generated a noise (Inverter replacement?)
>   > > From what I recall, Ted Summers said something about when the display is dead the Emax won't start. Maybe it's the LE Foil that's not working? But shouldn't one be able to read any characters then? The Emax rack's display is working. Well, the characters are shown but with no background light. 
>   > > I rather switch to a VFD but it seems to be a little work with that. Is there a replacement display to get somewhere? I don't wanna solder too much. 
>   > > 
>   > > 2) The keys Ab (third octave) to Db (5:th octave) generates no sound. However, it works to connect a MIDI keyboard to it and trigger all the notes. A funny thing is that on some sounds (loaded from disk), the D and Eb (5:th octave) generate sound but the voices "hangs" In most other sound banks they're dead as the other ones. It seems that only sounds with long decay, sustain and/or release are generated from the 5:th octave D and Eb. 
>   > > E, F, G #, G (5:th octave) do not work but the last A, A #, B is working. 
>   > > 
>   > > Any ideas? 
>   > > 
>   > > Regards
>   > > Kalle
>   > > 
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