?

The error message was changed with a software update.

I read that?somewhere?once but cant seem to find it now

What software versions are you using ?

-----------------------------------------------------------------------------------

2012/2/12 random2393 <holografique@...>

?

hi all,

In going through a full calibration and testing of my new Xpander, I noticed that one test does not pass properly. When doing the VMEM test, it fails with the follow error:

"VROM BAD"

I checked the service manual and this error is not indicated anywhere. It only states to replace several IC's if you specifically receive the "CA MEM Bad" error message. however this is not the error I'm receiving.

In reading the service manual, it appears as though the VMEM is used for buffering parameter data from the control board to the voice board. However, even with this error message, I don't see anything wrong with operational use of the Xpander itself. I've gone through most if not all the parameter settings to make sure control options are properly updating the components on the voice board. So far I have found nothing.

So while I'm not certain it's anything to worry about, it would be good to know just in case if this can turn into something worse later on or not.

thanks!

-omar

?

hi all,

In going through a full calibration and testing of my new Xpander, I noticed that one test does not pass properly. When doing the VMEM test, it fails with the follow error:

"VROM BAD"

I checked the service manual and this error is not indicated anywhere. It only states to replace several IC's if you specifically receive the "CA MEM Bad" error message. however this is not the error I'm receiving.

In reading the service manual, it appears as though the VMEM is used for buffering parameter data from the control board to the voice board. However, even with this error message, I don't see anything wrong with operational use of the Xpander itself. I've gone through most if not all the parameter settings to make sure control options are properly updating the components on the voice board. So far I have found nothing.

So while I'm not certain it's anything to worry about, it would be good to know just in case if this can turn into something worse later on or not.

thanks!

-omar

?

thanks for the feedback tobe.

I guess he can count me in as another "interested" customer for him to build out his new batch. now if we could just get in touch with him to let him know!! :)

-o

--- In xpantastic@..., Tobbe Bergman wrote:
>
> Hi there
>
> I also mailed him some time ago and it took a while for him to reply.
>
> Here is the mail I got:
> *
>
>
> Hi Tobe,
>
> Many thanks for your message and kind words.
>
> I have sold all of the (small) first batch of OB-VFD upgrades, but it is my
> intention to make another batch at some point. I am simply having trouble
> finding enough time to do so - I am very busy with other design and
> restoration work, not to mention keeping up with my children! But I will be
> happy to make them again for anybody in need.
>
> If you would like, I will keep your contact details and let you know when
> the next batch happens?
>
> Kind regards,
>
> Steve *
> *
> *
> *
> ----------------------------------------------------------
> *
> 2012/2/10 random2393
>
> > **
> >
> >
> > Does anyone know how to reach Steve Lenham from Bendan Sound Technology?
> >
> > I'm interested in getting his OB-VFD dot-matrix upgrade for my Xpander,
> > but I've not been able to reach him. No replies from emails sent via his
> > website.
> >
> > thanks!
> >
> > -o
> >
> >
> >
>

Hi there

I also mailed him some time ago and it took a while for him to reply.

Here is the mail I got:
*


Hi Tobe,

Many thanks for your message and kind words.

I have sold all of the (small) first batch of OB-VFD upgrades, but it is my
intention to make another batch at some point. I am simply having trouble
finding enough time to do so - I am very busy with other design and
restoration work, not to mention keeping up with my children! But I will be
happy to make them again for anybody in need.

If you would like, I will keep your contact details and let you know when
the next batch happens?

Kind regards,

Steve *
*
*
*
------------------------------------------------------------------------------------------------------------------------------------------------
*
2012/2/10 random2393 <holografique@...>

**


Does anyone know how to reach Steve Lenham from Bendan Sound Technology?

I'm interested in getting his OB-VFD dot-matrix upgrade for my Xpander,
but I've not been able to reach him. No replies from emails sent via his
website.

thanks!

-o

?

Does anyone know how to reach Steve Lenham from Bendan Sound Technology?

I'm interested in getting his OB-VFD dot-matrix upgrade for my Xpander, but I've not been able to reach him. No replies from emails sent via his website.

thanks!

-o

?

Hi!

I have a US version xpander, where the 'nasty little' transformer in the PSU
PCB is MISSING. It's named Incon 8103.

Does anyone have it for sale?
Did anyone fitb Xpander with an alternative PSU?

As most of you are fully aware of, it is quite a complicated part, putting out 6 different voltages!

I hope this is the right forum for such questions, if not please give me a shout!

Thanks

Carl beck, OSLO

?

thanks Guys for all your help!???? :-)

one more question: will the capacitors change fix the very very low output volume (its barely hearable) of voice 5 ?

or this is yet another problem of the xpander?

thanks,

best regards,

Bakis.

?

Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
[Doepfer_a100] group owner

www. parallel - worlds - music. com

www. facebook. com/ pages/Parallel-Worlds/192093934136476

www. myspace. com/ parallelworldsmusic

www. myspace. com/ interconnectedmusic

www. myspace. com/ memorygeist

www. DiN. org. uk

www. musicamaximamagnetica. com
www. vu-us. com

---

From: Karl Schmeer <shire03@...>
To: xpantastic@...
Sent: Saturday, January 28, 2012 6:25 AM
Subject: Re: [xpantastic] hello everyone, Xpander problem, help is needed...

?

Hello Bakis,

The other posters have it right. You should replace?the coupling caps.
Specifically I would replace?C549??on voice 5.?

This?part fails often, and causes tuning fails.??BTW It must have the 50VDC
rating or it won't work.

Actually I would change all Cx49 parts (x = voice number), because?it sounds as
if Voice 1 may have?this problem also.

However, this does not address the bleedthrough problem you mention on the
direct out of voice 5.
I?have an M12 so I have no direct outs, and?can't really comment on this.??

Best Luck

Karl

________________________________
From: Bakis Sirros <synth_freak_2000@...>
To: Xpantastic group <xpantastic@...>
Sent: Fri, January 27, 2012 2:30:18 PM
Subject: [xpantastic] hello everyone, Xpander problem, help is needed...

?
hi everyone,

new member here, my Name is Bakis.

recently bought an Xpander and have the following problem:

works and sounds great...? ...apart from voice 5, which, after its shipping to
me, does not pass the auto tune test.
?
sometimes the 'PW' section of it fails, sometimes the Res section fails,
sometimes all the sections of voice 5?fail (except the vca section of voice 5
that never fails).

?
even if i activate the problematic voice, after its been automatically shut off
by the Xpander OS, it sounds a bit different from the others in filter tone and
tuning (of course, as it cannot be tuned,) and very very low in volume.

another weird thing i noticed: when i direct voice 5 in its 'direct' output 5,
then, from this output, i can hear all of the xpander voices (together with
voice 5) but very low in volume.

all the other direct outputs work as they should, for all the other voices.
?
i performed software reset, re-sitted all ribbon cables and all of the chips in
the voice 5 section of the xpander voiceboard without success,
i also performed all the tests for the xpander (memory, vmemory, etc...) and all

are ok, afaik.

plus i re-sitted chip U106 which is responsible for the panning output section
of voice 5 (after studying the service manual).

also, i swapped both CEM3374 and CEM3372 of voice 5 with another working voice
chips (voice 6) and still the fault appears on voice 5. so, both the CEM chips
are Not the problem...

and i swapped ALL of the chips of voice 5 with the chips of voice 6 and still
the same problem appears on voice 5.

so ALL the chips in the voice 5 section are ok for sure.

and, after hitting tuning many many times and hitting tuning while the machine
was at various different presets, i noticed that thing:
when the machine was autotuning and it was in a preset that was very complex
with lots of modulations and vco modulation as well, then?voice 5 failed in the
vco tuning as well, (and, at one time, vco 1 failed!).

when the machine was autotuning, while it was in a simpler sound preset (some
brass or synthlead...), then?the voice 5 only failed in PWM and maybe Res... but

it passed vco tuning....!!

so maybe its a problem in another board of the machine (like the CPU) and not in

the voice 5 board ?
?
maybe this indicates that i should re-sit the chips in the main CPU /memory
board as well?? do you think i should take the time and re-sit all the chips in
the CPU board? would it make sense?
?
(do you think a 'HARD Reset' may fix the problem? how do i do this?)

is there anything specific i should check? everything seems connected.... i
cannot resit ALL the chips in all boards obviously... but maybe i should resit a

specific chip from another section of the xpander boards....? any ideas / help?
?
i really do not want to break anything inside the Xpander (i do not want to use
a soldering iron, after all, everything seems in place), but i can remove and
easily re-sit a specific chip or two, if needed of course....
?
btw, the seller is very honest and he insisted that the machine worked fine?(all

6 voices) before shipping, and i believe him..

thanks for all your help in advance!

best regards,????? :-)
Bakis.

Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist

[Doepfer_a100] group owner

www. parallel - worlds - music. com

www. facebook. com/ pages/Parallel-Worlds/192093934136476

www. myspace. com/ parallelworldsmusic

www. myspace. com/ interconnectedmusic

www. myspace. com/ memorygeist www. DiN. org. uk www. musicamaximamagnetica. com

www. vu-us. com

?

thanks Guys for all your help!???? :-)

one more question: will the capacitors change fix the very very low output volume (its barely hearable) of voice 5 ?

or this is yet another problem of the xpander?

thanks,

best regards,

Bakis.

?

Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
[Doepfer_a100] group owner

www. parallel - worlds - music. com

www. facebook. com/ pages/Parallel-Worlds/192093934136476

www. myspace. com/ parallelworldsmusic

www. myspace. com/ interconnectedmusic

www. myspace. com/ memorygeist

www. DiN. org. uk

www. musicamaximamagnetica. com
www. vu-us. com

---

From: Karl Schmeer <shire03@...>
To: xpantastic@...
Sent: Saturday, January 28, 2012 6:25 AM
Subject: Re: [xpantastic] hello everyone, Xpander problem, help is needed...

?

Hello Bakis,

The other posters have it right. You should replace?the coupling caps.
Specifically I would replace?C549??on voice 5.?

This?part fails often, and causes tuning fails.??BTW It must have the 50VDC
rating or it won't work.

Actually I would change all Cx49 parts (x = voice number), because?it sounds as
if Voice 1 may have?this problem also.

However, this does not address the bleedthrough problem you mention on the
direct out of voice 5.
I?have an M12 so I have no direct outs, and?can't really comment on this.??

Best Luck

Karl

________________________________
From: Bakis Sirros <synth_freak_2000@...>
To: Xpantastic group <xpantastic@...>
Sent: Fri, January 27, 2012 2:30:18 PM
Subject: [xpantastic] hello everyone, Xpander problem, help is needed...

?
hi everyone,

new member here, my Name is Bakis.

recently bought an Xpander and have the following problem:

works and sounds great...? ...apart from voice 5, which, after its shipping to
me, does not pass the auto tune test.
?
sometimes the 'PW' section of it fails, sometimes the Res section fails,
sometimes all the sections of voice 5?fail (except the vca section of voice 5
that never fails).

?
even if i activate the problematic voice, after its been automatically shut off
by the Xpander OS, it sounds a bit different from the others in filter tone and
tuning (of course, as it cannot be tuned,) and very very low in volume.

another weird thing i noticed: when i direct voice 5 in its 'direct' output 5,
then, from this output, i can hear all of the xpander voices (together with
voice 5) but very low in volume.

all the other direct outputs work as they should, for all the other voices.
?
i performed software reset, re-sitted all ribbon cables and all of the chips in
the voice 5 section of the xpander voiceboard without success,
i also performed all the tests for the xpander (memory, vmemory, etc...) and all

are ok, afaik.

plus i re-sitted chip U106 which is responsible for the panning output section
of voice 5 (after studying the service manual).

also, i swapped both CEM3374 and CEM3372 of voice 5 with another working voice
chips (voice 6) and still the fault appears on voice 5. so, both the CEM chips
are Not the problem...

and i swapped ALL of the chips of voice 5 with the chips of voice 6 and still
the same problem appears on voice 5.

so ALL the chips in the voice 5 section are ok for sure.

and, after hitting tuning many many times and hitting tuning while the machine
was at various different presets, i noticed that thing:
when the machine was autotuning and it was in a preset that was very complex
with lots of modulations and vco modulation as well, then?voice 5 failed in the
vco tuning as well, (and, at one time, vco 1 failed!).

when the machine was autotuning, while it was in a simpler sound preset (some
brass or synthlead...), then?the voice 5 only failed in PWM and maybe Res... but

it passed vco tuning....!!

so maybe its a problem in another board of the machine (like the CPU) and not in

the voice 5 board ?
?
maybe this indicates that i should re-sit the chips in the main CPU /memory
board as well?? do you think i should take the time and re-sit all the chips in
the CPU board? would it make sense?
?
(do you think a 'HARD Reset' may fix the problem? how do i do this?)

is there anything specific i should check? everything seems connected.... i
cannot resit ALL the chips in all boards obviously... but maybe i should resit a

specific chip from another section of the xpander boards....? any ideas / help?
?
i really do not want to break anything inside the Xpander (i do not want to use
a soldering iron, after all, everything seems in place), but i can remove and
easily re-sit a specific chip or two, if needed of course....
?
btw, the seller is very honest and he insisted that the machine worked fine?(all

6 voices) before shipping, and i believe him..

thanks for all your help in advance!

best regards,????? :-)
Bakis.

Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist

[Doepfer_a100] group owner

www. parallel - worlds - music. com

www. facebook. com/ pages/Parallel-Worlds/192093934136476

www. myspace. com/ parallelworldsmusic

www. myspace. com/ interconnectedmusic

www. myspace. com/ memorygeist www. DiN. org. uk www. musicamaximamagnetica. com

www. vu-us. com

?

Hello Bakis,

The other posters have it right. You should replace?the coupling caps.
Specifically I would replace?C549??on voice 5.?

This?part fails often, and causes tuning fails.??BTW It must have the 50VDC
rating or it won't work.

Actually I would change all Cx49 parts (x = voice number), because?it sounds as
if Voice 1 may have?this problem also.

However, this does not address the bleedthrough problem you mention on the
direct out of voice 5.
I?have an M12 so I have no direct outs, and?can't really comment on this.??

Best Luck

Karl

________________________________
From: Bakis Sirros <synth_freak_2000@...>
To: Xpantastic group <xpantastic@...>
Sent: Fri, January 27, 2012 2:30:18 PM
Subject: [xpantastic] hello everyone, Xpander problem, help is needed...

?
hi everyone,

new member here, my Name is Bakis.

recently bought an Xpander and have the following problem:

works and sounds great...? ...apart from voice 5, which, after its shipping to
me, does not pass the auto tune test.
?
sometimes the 'PW' section of it fails, sometimes the Res section fails,
sometimes all the sections of voice 5?fail (except the vca section of voice 5
that never fails).

?
even if i activate the problematic voice, after its been automatically shut off
by the Xpander OS, it sounds a bit different from the others in filter tone and
tuning (of course, as it cannot be tuned,) and very very low in volume.

another weird thing i noticed: when i direct voice 5 in its 'direct' output 5,
then, from this output, i can hear all of the xpander voices (together with
voice 5) but very low in volume.

all the other direct outputs work as they should, for all the other voices.
?
i performed software reset, re-sitted all ribbon cables and all of the chips in
the voice 5 section of the xpander voiceboard without success,
i also performed all the tests for the xpander (memory, vmemory, etc...) and all

are ok, afaik.

plus i re-sitted chip U106 which is responsible for the panning output section
of voice 5 (after studying the service manual).

also, i swapped both CEM3374 and CEM3372 of voice 5 with another working voice
chips (voice 6) and still the fault appears on voice 5. so, both the CEM chips
are Not the problem...

and i swapped ALL of the chips of voice 5 with the chips of voice 6 and still
the same problem appears on voice 5.

so ALL the chips in the voice 5 section are ok for sure.

and, after hitting tuning many many times and hitting tuning while the machine
was at various different presets, i noticed that thing:
when the machine was autotuning and it was in a preset that was very complex
with lots of modulations and vco modulation as well, then?voice 5 failed in the
vco tuning as well, (and, at one time, vco 1 failed!).

when the machine was autotuning, while it was in a simpler sound preset (some
brass or synthlead...), then?the voice 5 only failed in PWM and maybe Res... but

it passed vco tuning....!!

so maybe its a problem in another board of the machine (like the CPU) and not in

the voice 5 board ?
?
maybe this indicates that i should re-sit the chips in the main CPU /memory
board as well?? do you think i should take the time and re-sit all the chips in
the CPU board? would it make sense?
?
(do you think a 'HARD Reset' may fix the problem? how do i do this?)

is there anything specific i should check? everything seems connected.... i
cannot resit ALL the chips in all boards obviously... but maybe i should resit a

specific chip from another section of the xpander boards....? any ideas / help?
?
i really do not want to break anything inside the Xpander (i do not want to use
a soldering iron, after all, everything seems in place), but i can remove and
easily re-sit a specific chip or two, if needed of course....
?
btw, the seller is very honest and he insisted that the machine worked fine?(all

6 voices) before shipping, and i believe him..

thanks for all your help in advance!

best regards,????? :-)
Bakis.

Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist

[Doepfer_a100] group owner

www. parallel - worlds - music. com

www. facebook. com/ pages/Parallel-Worlds/192093934136476

www. myspace. com/ parallelworldsmusic

www. myspace. com/ interconnectedmusic

www. myspace. com/ memorygeist www. DiN. org. uk www. musicamaximamagnetica. com

www. vu-us. com

?

I was just going to say the same thing.? If you swapped all the chips, a good idea BTW, there's not much left voice to voice on the board to age or break down other than the electrolytic capacitors (can shaped ones).? Luckily they're really cheap and really easy to un-solder and re-solder.? Good luck.

---

From: "blchrr@..."
To: xpantastic@...
Sent: Friday, January 27, 2012 6:40 PM
Subject: [xpantastic] Re: hello everyone, Xpander problem, help is needed...

?

Hi Bakis, mine had similiar issues which turned out to be to due to old
capacitors... its been fine since it was recapped (around 3(ish) years ago)

> hi everyone,
>
> new member here, my Name is Bakis.
>
> recently bought an Xpander and have the following problem:
>
> works and sounds great...? ...apart from voice 5,
> which, after its shipping to me, does not pass the auto tune test.
> ?
> sometimes the 'PW' section of it fails, sometimes the Res section
> fails, sometimes all the sections of voice 5?fail (except the vca section of
> voice 5 that never fails).
> ?
> even if i activate the problematic voice, after its
> been automatically shut off by the Xpander OS, it sounds a bit different from the
> others in filter tone and tuning (of course, as it cannot be tuned,) and very very low in volume.
> another weird thing i noticed: when i direct voice
> 5 in its 'direct' output 5, then, from this output, i can hear all of the
> xpander voices (together with voice 5) but very low in volume.
> all the other direct outputs work as they should,
> for all the other voices.
> ?
> i performed software reset, re-sitted all ribbon
> cables and all of the chips in the voice 5 section of the xpander voiceboard
> without success,
> i also performed all the tests for the xpander
> (memory, vmemory, etc...) and all are ok, afaik.
> plus i re-sitted chip U106 which is responsible for
> the panning output section of voice 5 (after studying the service
> manual).
>
> also, i swapped both CEM3374 and CEM3372 of voice 5 with another working voice chips (voice 6) and
> still the fault appears on voice 5. so, both the CEM chips are Not the
> problem...
>
>
> and i swapped ALL of the chips of voice 5 with
> the chips of voice 6 and still the same problem appears on voice 5.
>
> so ALL the chips in the voice 5 section are ok for sure.
>
>
> and, after hitting tuning many many times and hitting tuning
> while the machine was at various different presets, i noticed that thing:
> when the machine was autotuning and it was in a preset
> that was very complex with lots of modulations and vco modulation as well,
> then?voice 5 failed in the vco tuning as well, (and, at one time, vco 1
> failed!).
> when the machine was autotuning, while it was in a simpler
> sound preset (some brass or synthlead...), then?the voice 5 only failed in PWM
> and maybe Res... but it passed vco tuning....!!
> so maybe its a problem in another board of the machine
> (like the CPU) and not in the voice 5 board ?
> ?
> maybe this indicates that i should re-sit the chips in the
> main CPU /memory board as well?? do you think i should take the time and re-sit
> all the chips in the CPU board? would it make sense?
> ?
> (do you think a 'HARD Reset' may fix the problem? how do i do
> this?)
>
> is there anything specific i should check?
> everything seems connected.... i cannot resit ALL the chips in all boards
> obviously... but maybe i should resit a specific chip from another section of
> the xpander boards....? any ideas / help?
> ?
> i really do not want to break anything inside the
> Xpander (i do not want to use a soldering iron, after all, everything seems in
> place), but i can remove and easily re-sit a specific chip or two, if needed of
> course....
> ?
> btw, the seller is very honest and he insisted that
> the machine worked fine?(all 6 voices) before shipping, and i believe
> him..
>
> thanks for all your help in advance!
>
> best regards,????? :-)
> Bakis.
>
>
> Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
>
> [Doepfer_a100] group owner
>
> www. parallel - worlds - music. com
>
> www. facebook. com/ pages/Parallel-Worlds/192093934136476
>
> www. myspace. com/ parallelworldsmusic
>
> www. myspace. com/ interconnectedmusic
>
> www. myspace. com/ memorygeist
> www. DiN. org. uk
> www. musicamaximamagnetica. com
> www. vu-us. com

hi everyone,

new member here, my Name is Bakis.

recently bought an Xpander and have the following problem:

works and sounds great...? ...apart from voice 5,
which, after its shipping to me, does not pass the auto tune test.
?
sometimes the 'PW' section of it fails, sometimes the Res section
fails, sometimes all the sections of voice 5?fail (except the vca section of
voice 5 that never fails).
?
even if i activate the problematic voice, after its
been automatically shut off by the Xpander OS, it sounds a bit different from the
others in filter tone and tuning (of course, as it cannot be tuned,) and very very low in volume.
another weird thing i noticed: when i direct voice
5 in its 'direct' output 5, then, from this output, i can hear all of the
xpander voices (together with voice 5) but very low in volume.
all the other direct outputs work as they should,
for all the other voices.
?
i performed software reset, re-sitted all ribbon
cables and all of the chips in the voice 5 section of the xpander voiceboard
without success,
i also performed all the tests for the xpander
(memory, vmemory, etc...) and all are ok, afaik.
plus i re-sitted chip U106 which is responsible for
the panning output section of voice 5 (after studying the service
manual).

also, i swapped both CEM3374 and CEM3372 of voice 5 with another working voice chips (voice 6) and
still the fault appears on voice 5. so, both the CEM chips are Not the
problem...


and i swapped ALL of the chips of voice 5 with
the chips of voice 6 and still the same problem appears on voice 5.

so ALL the chips in the voice 5 section are ok for sure.


and, after hitting tuning many many times and hitting tuning
while the machine was at various different presets, i noticed that thing:
when the machine was autotuning and it was in a preset
that was very complex with lots of modulations and vco modulation as well,
then?voice 5 failed in the vco tuning as well, (and, at one time, vco 1
failed!).
when the machine was autotuning, while it was in a simpler
sound preset (some brass or synthlead...), then?the voice 5 only failed in PWM
and maybe Res... but it passed vco tuning....!!
so maybe its a problem in another board of the machine
(like the CPU) and not in the voice 5 board ?
?
maybe this indicates that i should re-sit the chips in the
main CPU /memory board as well?? do you think i should take the time and re-sit
all the chips in the CPU board? would it make sense?
?
(do you think a 'HARD Reset' may fix the problem? how do i do
this?)

is there anything specific i should check?
everything seems connected.... i cannot resit ALL the chips in all boards
obviously... but maybe i should resit a specific chip from another section of
the xpander boards....? any ideas / help?
?
i really do not want to break anything inside the
Xpander (i do not want to use a soldering iron, after all, everything seems in
place), but i can remove and easily re-sit a specific chip or two, if needed of
course....
?
btw, the seller is very honest and he insisted that
the machine worked fine?(all 6 voices) before shipping, and i believe
him..

thanks for all your help in advance!

best regards,????? :-)
Bakis.


Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist

[Doepfer_a100] group owner

www. parallel - worlds - music. com

www. facebook. com/ pages/Parallel-Worlds/192093934136476

www. myspace. com/ parallelworldsmusic

www. myspace. com/ interconnectedmusic

www. myspace. com/ memorygeist
www. DiN. org. uk
www. musicamaximamagnetica. com
www. vu-us. com

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

From: synthparts

To: xpantastic@...

Sent: Saturday, December 03, 2011 10:22 AM

Subject: [xpantastic] Re: Those of you who replaced CEM 3372s how did you take them out ?

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It's not just the Xpander/M-12. The Prophet-600 is pick about CEM3372s also. I have some of the older rev chips in stock.
Doug
synthparts.com
--- In xpantastic@..., "ktfiz" wrote:
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> The newer rev D ICs from Technology Transport didn't work properly in my Xpander...
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> A while back I had my Xpander serviced for one voice that would very faintly sustain indefinitely. It was not obvious on every patch, but on patches with longer release times if you cranked the volume there was a hanging note. Otherwise everything worked perfectly and it passed all tests.
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> After swapping chips around, we finally the narrowed the problem down to the 3372 IC. It was a rev D 3372 I had recently replaced from Technology Transplant. I had purchased some more 3372's as back up from Technology Transplant so I brought them to the tech to try. We tried all eight 3372 ICs that I had and every one had the hanging note issue. My tech finally tried a 3372 that he had and it worked!
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> It seems the Xpander is picky about it's 3372s. From my experience, the newer rev D ICs from Technology Transport didn't work properly in my Xpander.
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> --- In xpantastic@..., "Tobbe" wrote:
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> > When I replaced my Eproms for Voice and Processor I used a PLCC Extractor like this:
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> > will this work for pulling out the CEM 3372s as well ?
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> > I might buy a set of CEM 3372 Rev D from Chipforbrains on Ebay.
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> > Has anyone had a good experience with them ?
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