Emax

Yes I reseated all the DACs and it was gone! And I guess the DAC I bought might not be good, or maybe their pins not being the same are making a bed connection too.
Regarding the rs422, I tested my cable, I used some good quality shielded cable to make it. I also tested the rs422 on the emax. No problem there.
Tomorrow I'll test the midi transfer to see kid it works.
Best
K

http://www.krikor.fr
+33632199413

Booking dj & live: cedric@referenceprods.fr

> Le 30 avr. 2014 à 21:06, Ted Summers <djtbs1@...> a écrit :
> 
> You replaced the old chip and the distortion goes away- this would mean to me that there was a bad connection on a pin of the IC.
> regards the RS422- I don't have a EmuSer, so I don't have any other idea than previously explained as possible reasons.
> 
> -T
> 
> 
>> On Wed, Apr 30, 2014 at 12:02 PM, krikor kouchian <krikorola@...> wrote:
>>  
>> Hi,
>> So i changed the IC16, it didn't change a thing regarding the RS422
>> transfert.
>> I still get the error message.
>> If i try to send something to the emax i get a bad ACK, bad packet message.
>> If try to retrieve a bank I get the message in the PNG attached from EMXP,
>> and the emax keeps trying to send the back.
>> Otherwise on the distortion problem, it is gone.
>> i reseated all the DACs and it's irking fine.
>> The weird thing is that i always had a voice that was saturating, so i
>> bought 4 spare DACs.
>> i tried to change the "defective" chip, but then i got some crazy bug,
>> sound was distorted with some kind of a ground loop in the back.
>> I put the original one in place, and now it's all working.
>> I guess the emxp/rs422 is not an option for me
>> :(
>> 
>> http://www.krikor.fr
>> +33632199413
>> 
>> For Live&Dj bookings contact: cedric@...
>> 
>> 2014-04-28 23:07 GMT+02:00 Ted Summers <djtbs1@...>:
>> 
>> >
>> >
>> > I dunno- but you could certainly check for AC on the DC lines, just set
>> > your multimeter to AC and check between +5 and GND and then also check +12V
>> > and GND.
>> > You shouldn't have AC there.
>> >
>> > -T
>> >
>> >
>> > On Mon, Apr 28, 2014 at 2:01 PM, Krikor <krikorola@...> wrote:
>> >
>> >>
>> >>
>> >> Could it come from the PSU going down? I had the PSU fixed last year,
>> >> maybe something was done wrong
>> >>
>> >>
>> >> http://www.krikor.fr
>> >> +33632199413
>> >>
>> >> Booking dj & live: cedric@referenceprods.fr
>> >>
>> >> Le 28 avr. 2014 à 22:37, Ted Summers <djtbs1@...> a écrit :
>> >>
>> >>
>> >>
>> >> That description of connecting the pins directly from one chip to the
>> >> other chip makes me think it is the cable used.
>> >> Perhaps the cable is too long, or doesn't have proper shielding, or not
>> >> enough twist in wire so that signal loss or interference occurs in the
>> >> length of the cable.... just a couple thoughts electrically.
>> >>
>> >> The only other thing I can think of would be a difference in ground
>> >> potential between the two connected devices. The voltage difference can
>> >> mess with the signal too... I know on RS-422 devices I used to install for
>> >> Point of Sale, that in rare installations we had to use line conditioners
>> >> with "ground guard" that negated difference potential across the grounds.
>> >> Once we did that the RS-422 worked perfectly. But those were expensive....
>> >> although there is testing that can be done to see if there is a voltage on
>> >> the ground that shouldn't be there... usually this is AC voltage present.
>> >>
>> >> On that note, AC that has a bad EMI / RF filter from some device in the
>> >> studio could also put that AC onto the ground and the other devices could
>> >> pick it up.... I have seen that in practice at a site also.
>> >>
>> >> -Ted
>> >>
>> >>
>> >> On Mon, Apr 28, 2014 at 1:24 PM, Krikor <krikorola@...> wrote:
>> >>
>> >>>
>> >>>
>> >>> Hi Ted,
>> >>> I did today, it didn't work. I still get wrong answer from the emax
>> >>> (0.0.0.0 instead of the right sysex message)
>> >>> I need to try this fix:
>> >>> http://eiiiforum.com/index.php?topic=2274.15
>> >>> I will do that when I have some time after the 15 may.
>> >>> I found a another emax in Paris, if it works I will buy it.
>> >>> Mine is 1020 serial 335, the one I found is 1020 serial 330.
>> >>> So it should be compatible with HD mod too.
>> >>> Best
>> >>> K
>> >>>
>> >>> http://www.krikor.fr
>> >>> +33632199413
>> >>>
>> >>> Booking dj & live: cedric@...
>> >>>
>> >>> Le 28 avr. 2014 à 20:29, Ted Summers <djtbs1@...> a écrit :
>> >>>
>> >>>
>> >>>
>> >>> Krikor-
>> >>>
>> >>> Did you ever try that other PLUS OS version Dave supplied to see if the
>> >>> transfer with EmuSer worked for you?
>> >>>
>> >>>
>> >>> Thx,
>> >>> Ted
>> >>>
>> >>>
>> >>> On Mon, Apr 28, 2014 at 11:03 AM, Krikor <krikorola@...> wrote:
>> >>>
>> >>>>
>> >>>>
>> >>>> Thanks
>> >>>> I'll check the PSU tomorrow.
>> >>>> Best
>> >>>> K
>> >>>>
>> >>>>
>> >>>> http://www.krikor.fr
>> >>>> +33632199413
>> >>>>
>> >>>> Booking dj & live: cedric@...
>> >>>>
>> >>>> Le 28 avr. 2014 à 19:38, Robert Van Kuran <guitar5l50@...> a
>> >>>> écrit :
>> >>>>
>> >>>>
>> >>>>
>> >>>> Follow that 5v rail
>> >>>>
>> >>>> -RVK
>> >>>>
>> >>>> On Apr 28, 2014, at 12:37 PM, "jammie" <jammie.emma@...>
>> >>>> wrote:
>> >>>>
>> >>>>
>> >>>>
>> >>>> test psu for ripple
>> >>>>
>> >>>> ----- Original Message -----
>> >>>> *From:* Krikor <krikorola@...>
>> >>>> *To:* emax@yahoogroups.com
>> >>>> *Sent:* Monday, April 28, 2014 6:22 PM
>> >>>> *Subject:* [emax] Main output distorting
>> >>>>
>> >>>>
>> >>>>
>> >>>> Hi
>> >>>> I haven't used my emax for a few month.
>> >>>> Today when I plugged it in the main out sounds like 8bit going thru a
>> >>>> fuzz.
>> >>>> All 8 voices acting the same.
>> >>>> Anybody has an idea what can cause that?
>> >>>> Best
>> >>>> K
>> >>>>
>> >>>>
>> >>>> http://www.krikor.fr
>> >>>> +33632199413
>> >>>>
>> >>>> Booking dj & live: cedric@...
>> >>>>
>> >>>>
>> >>>
>> >>
>> > 
>> >
>> 
>> [Non-text portions of this message have been removed]
> 
>