Patches and discussion for Ensoniq VFX family

Hi Richard,
excuse my terrible english, hope you understand what trying to say. 
My first VFX died the same way. It`s correct to have a look at the Diodes,
but the better way first, I think, is to measure the Voltages of the
Powersupply, the values of the different Voltages( +12V, -12V, etc.) are
printed on the Powersupply-PCB near the connector to Mainboard. In my case
they were correct, so that's not the fault. It`s not easy to locate the
error, of cause I find no way to get electrical schematics for the VFX. I`ve
tried to find the error in the Digital to Analog - Conversion Area, changed
some Operational Amps etc. without success. So now I fear that a Voltage
peak has destroyed the Effectprocessor. Short time ago I´ve bought a second
VFX and I hope i´ll can find the Problem with comparemeasures of both
Synt´s. In the next days I will not find the time to do this, but I will let
you now if I have any success or new cognitions.

Jürgen (zogboz)

-----Ursprüngliche Nachricht-----
Von: R. Green [mailto:computeroutlaw@...m] 
Gesendet: Dienstag, 20. November 2001 01:19
An: Ensoniq-VFX-SD@yahoogroups.com
Betreff: Re: [Ensoniq-VFX-SD] board problem

ok, I have a vfx all the fuses blew and after
replacing them the unit stopped all audio output. all
other features seem to work including midi out to
other midi devices, but alas no sound. Any remote clue
what a guy could do next? is there a master reset
other than the preset combo? or is this unit finally
dead?

Richard

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Richard, J\ufffdrgen,

Maybe the detailed VFX schematics located at :
neopatch.hypermart.net/tools.htm, will help you all
electrician gyzmos fix your synth ?

Just my Euro $.02,

Fred

 --- "Nitsch,_J\ufffdrgen" <nitsch@...> a \ufffdcrit\ufffd:
> Hi Richard,
> excuse my terrible english, hope you understand what
> trying to say. 
> My first VFX died the same way. It`s correct to have
> a look at the Diodes,
> but the better way first, I think, is to measure the
> Voltages of the
> Powersupply, the values of the different Voltages(
> +12V, -12V, etc.) are
> printed on the Powersupply-PCB near the connector to
> Mainboard. In my case
> they were correct, so that's not the fault. It`s not
> easy to locate the
> error, of cause I find no way to get electrical
> schematics for the VFX. I`ve
> tried to find the error in the Digital to Analog -
> Conversion Area, changed
> some Operational Amps etc. without success. So now I
> fear that a Voltage
> peak has destroyed the Effectprocessor. Short time
> ago I\ufffdve bought a second
> VFX and I hope i\ufffdll can find the Problem with
> comparemeasures of both
> Synt\ufffds. In the next days I will not find the time to
> do this, but I will let
> you now if I have any success or new cognitions.
> 
> J\ufffdrgen (zogboz)
> 
> -----Urspr\ufffdngliche Nachricht-----
> Von: R. Green [mailto:computeroutlaw@...] 
> Gesendet: Dienstag, 20. November 2001 01:19
> An: Ensoniq-VFX-SD@yahoogroups.com
> Betreff: Re: [Ensoniq-VFX-SD] board problem
> 
> ok, I have a vfx all the fuses blew and after
> replacing them the unit stopped all audio output.
> all
> other features seem to work including midi out to
> other midi devices, but alas no sound. Any remote
> clue
> what a guy could do next? is there a master reset
> other than the preset combo? or is this unit finally
> dead?
> 
> Richard
> 
> __________________________________________________
> Do You Yahoo!?
> Find the one for you at Yahoo! Personals
> http://personals.yahoo.com
> 
> To unsubscribe from this group, send an email to:
> Ensoniq-VFX-SD-unsubscribe@egroups.com
> 
>  
> 
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/ 
> 
>  

=====
--
Si la pierre tombe sur l'oeuf, malheur a l'oeuf,
Si l'oeuf tombe sur la pierre, malheur a l'oeuf.
   Frederic (roidelaplage@...)

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In a message dated 11/20/01 4:42:38 AM Pacific Standard Time, 
nitsch@linmpi.mpg.de writes:

<< Subj:     AW: [Ensoniq-VFX-SD] board problem
 Date:  11/20/01 4:42:38 AM Pacific Standard Time

 From:  nitsch@... ("Nitsch, Jürgen")
 Reply-to:  Ensoniq-VFX-SD@yahoogroups.com
 To:    Ensoniq-VFX-SD@yahoogroups.com ('Ensoniq-VFX-SD@yahoogroups.com')
 
 Hi Richard,
 excuse my terrible english, hope you understand what trying to say. 
 My first VFX died the same way. It`s correct to have a look at the Diodes,
 but the better way first, I think, is to measure the Voltages of the
 Powersupply, the values of the different Voltages( +12V, -12V, etc.) are
 printed on the Powersupply-PCB near the connector to Mainboard. In my case
 they were correct, so that's not the fault. It`s not easy to locate the
 error, of cause I find no way to get electrical schematics for the VFX. I`ve
 tried to find the error in the Digital to Analog - Conversion Area, changed
 some Operational Amps etc. without success. So now I fear that a Voltage
 peak has destroyed the Effectprocessor. Short time ago I´ve bought a second
 VFX and I hope i´ll can find the Problem with comparemeasures of both
 Synt´s. In the next days I will not find the time to do this, but I will let
 you now if I have any success or new cognitions.
 
 Jürgen (zogboz) >>

         Is the 68000 CPU get hot qucikly when you test the unit? And yes I 
ment to test the voltages. 
Richard