Vintage Synth Repair

Hi! 

I have a Moog Source with problems to the Arpeggiator and Sequencer:

If you select the Sequencer, the display shows the 88 digits for a very 
short time, then goes black again. You can not record anything into the 
Sequencer and play it back. Both sequences are empty at the moment.

Also for the Arpeggiator. Here you can play in a sequence, the digits 
count down in the display, until you hit the first note played again. 
But then you can not play it back, there is no sound. 

Everything else with the level 2 functions (S&H etc.) is working.
The battery is good (3,4 V) and the membrane switches are working 
pretty well! The unit is in a good overall condition. No other problems.

Any ideas?

> The battery is good (3,4 V) 

Hi, sorry about the poor question: 3,4 V at work oder did you solder it out?
My Matrix 1000 had a battery with 3,4V, too. But it was not good. I measured it in my Hand 
with a digital Voltmeter - a friend told me that this cannot say something about the batterys 
real Status, i have to measure under work. I changed it and now the Matrix works very fine...

cheers
Martin

Is the LFO LED blinking?
The sequencer and the Arpeggiator run on the LFO clock.

Also do as the other reply and remove the battery from the circuit 
and measure the voltage.
GD


--- In vintagesynthrepair@yahoogroups.com, "Ambrosia" <s_carter@...> 
wrote:
>
> Hi! 
> 
> I have a Moog Source with problems to the Arpeggiator and 
Sequencer:
> 
> If you select the Sequencer, the display shows the 88 digits for a 
very 
> short time, then goes black again. You can not record anything 
into the 
> Sequencer and play it back. Both sequences are empty at the moment.
> 
> Also for the Arpeggiator. Here you can play in a sequence, the 
digits 
> count down in the display, until you hit the first note played 
again. 
> But then you can not play it back, there is no sound. 
> 
> Everything else with the level 2 functions (S&H etc.) is working.
> The battery is good (3,4 V) and the membrane switches are working 
> pretty well! The unit is in a good overall condition. No other 
problems.

> 
> Any ideas?
>

Hi sounds very like a ram problem to me. Probly socketed so that's the first thing I would do. Swap it out with another one.
 
Well I say first, check the voltages at the Ram too..the ram in that synth is 6514. 1k x 4 CMOS +5v supply.

From: Ambrosia <s_carter@...>
Subject: [vintagesynthrepair] Moog Source Sequencer roblem
To: vintagesynthrepair@yahoogroups.com
Date: Thursday, 30 October, 2008, 9:10 AM






Hi! 

I have a Moog Source with problems to the Arpeggiator and Sequencer:

If you select the Sequencer, the display shows the 88 digits for a very 
short time, then goes black again. You can not record anything into the 
Sequencer and play it back. Both sequences are empty at the moment.

Also for the Arpeggiator. Here you can play in a sequence, the digits 
count down in the display, until you hit the first note played again. 
But then you can not play it back, there is no sound. 

Everything else with the level 2 functions (S&H etc.) is working.
The battery is good (3,4 V) and the membrane switches are working 
pretty well! The unit is in a good overall condition. No other problems.

Any ideas?

Hi, thank you for the quick answers...  

I did not solder the battery out yet. I measured with the units power
turned off. As far as the unit is working well so far, I think, the
battery should not be the problem. 
The Source is not loosing his patches or something else..

The LFO LED is blinking, and of course you can change the speed of the
 LFO. No problem there as far as I can see. 

As far as all IC´s are socketed, this could be a good hint. 
Where is the RAM located? which board? I think it has to be the
digital board, right? Makes sense to me that the defect could be on
this board. Is this the one on the left side inside the unit?

Cheers


--- In vintagesynthrepair@yahoogroups.com, "martinreuter"
<FrauReuter@...> wrote:
>
> 
> > The battery is good (3,4 V) 
> 
> Hi, sorry about the poor question: 3,4 V at work oder did you solder
it out?
> My Matrix 1000 had a battery with 3,4V, too. But it was not good. I
measured it in my Hand 
> with a digital Voltmeter - a friend told me that this cannot say
something about the batterys 
> real Status, i have to measure under work. I changed it and now the
Matrix works very fine...

> 
> cheers
> Martin
>

Hi,
Looking at the supplemental material,
Does your Source have the updated rom and inputs?
Your arp an sequencer can run from a sync from
a drum machine. If the Source things there is 
a drum machine connected, it may be waiting for the clock
from it.
The din socket will say "SYNC IN" below it.
I would check the associated circuit with this.

Hope this helps.
GD

--- In vintagesynthrepair@yahoogroups.com, "Ambrosia" <s_carter@...> 
wrote:
>
> Hi, thank you for the quick answers...  
> 
> I did not solder the battery out yet. I measured with the units 
power
> turned off. As far as the unit is working well so far, I think, the
> battery should not be the problem. 
> The Source is not loosing his patches or something else..
> 
> The LFO LED is blinking, and of course you can change the speed of 
the
>  LFO. No problem there as far as I can see. 
> 
> As far as all IC´s are socketed, this could be a good hint. 
> Where is the RAM located? which board? I think it has to be the
> digital board, right? Makes sense to me that the defect could be on
> this board. Is this the one on the left side inside the unit?
> 
> Cheers
> 
> 
> --- In vintagesynthrepair@yahoogroups.com, "martinreuter"
> <FrauReuter@> wrote:
> >
> > 
> > > The battery is good (3,4 V) 
> > 
> > Hi, sorry about the poor question: 3,4 V at work oder did you 
solder
> it out?
> > My Matrix 1000 had a battery with 3,4V, too. But it was not 
good. I
> measured it in my Hand 
> > with a digital Voltmeter - a friend told me that this cannot say
> something about the batterys 
> > real Status, i have to measure under work. I changed it and now 
the

> Matrix works very fine...
> > 
> > cheers
> > Martin
> >
>

Hi, it is the last Version, with the DIN Sync.
The Software has been updated also to the last Revision, I think it
was 3.2.


--- In vintagesynthrepair@yahoogroups.com, "gerryrdahl"
<gerryrdahl@...> wrote:

>
> Hi,
> Looking at the supplemental material,
> Does your Source have the updated rom and inputs?
> Your arp an sequencer can run from a sync from
> a drum machine. If the Source things there is 
> a drum machine connected, it may be waiting for the clock
> from it.
> The din socket will say "SYNC IN" below it.
> I would check the associated circuit with this.
> 
> Hope this helps.
> GD
> 
> --- In vintagesynthrepair@yahoogroups.com, "Ambrosia" <s_carter@> 
> wrote:
> >
> > Hi, thank you for the quick answers...  
> > 
> > I did not solder the battery out yet. I measured with the units 
> power
> > turned off. As far as the unit is working well so far, I think, the
> > battery should not be the problem. 
> > The Source is not loosing his patches or something else..
> > 
> > The LFO LED is blinking, and of course you can change the speed of 
> the
> >  LFO. No problem there as far as I can see. 
> > 
> > As far as all IC´s are socketed, this could be a good hint. 
> > Where is the RAM located? which board? I think it has to be the
> > digital board, right? Makes sense to me that the defect could be on
> > this board. Is this the one on the left side inside the unit?
> > 
> > Cheers
> > 
> > 
> > --- In vintagesynthrepair@yahoogroups.com, "martinreuter"
> > <FrauReuter@> wrote:
> > >
> > > 
> > > > The battery is good (3,4 V) 
> > > 
> > > Hi, sorry about the poor question: 3,4 V at work oder did you 
> solder
> > it out?
> > > My Matrix 1000 had a battery with 3,4V, too. But it was not 
> good. I
> > measured it in my Hand 
> > > with a digital Voltmeter - a friend told me that this cannot say
> > something about the batterys 
> > > real Status, i have to measure under work. I changed it and now 
> the
> > Matrix works very fine...
> > > 
> > > cheers
> > > Martin
> > >
> >
>

last software is 3.3 on the source.
 
but yeh you have a late one...the best one I think with Din Sync.
 
Have you swapped the ram out yet?

--- On Fri, 31/10/08, Ambrosia <s_carter@...> wrote:

From: Ambrosia <s_carter@...>
Subject: [vintagesynthrepair] Re: Moog Source Sequencer roblem
To: vintagesynthrepair@yahoogroups.com
Date: Friday, 31 October, 2008, 11:25 AM






Hi, it is the last Version, with the DIN Sync.
The Software has been updated also to the last Revision, I think it
was 3.2.

--- In vintagesynthrepair@ yahoogroups. com, "gerryrdahl"
<gerryrdahl@ ...> wrote:

>
> Hi,
> Looking at the supplemental material,
> Does your Source have the updated rom and inputs?
> Your arp an sequencer can run from a sync from
> a drum machine. If the Source things there is 
> a drum machine connected, it may be waiting for the clock
> from it.
> The din socket will say "SYNC IN" below it.
> I would check the associated circuit with this.
> 
> Hope this helps.
> GD
> 
> --- In vintagesynthrepair@ yahoogroups. com, "Ambrosia" <s_carter@> 
> wrote:
> >
> > Hi, thank you for the quick answers... 
> > 
> > I did not solder the battery out yet. I measured with the units 
> power
> > turned off. As far as the unit is working well so far, I think, the
> > battery should not be the problem. 
> > The Source is not loosing his patches or something else..
> > 
> > The LFO LED is blinking, and of course you can change the speed of 
> the
> > LFO. No problem there as far as I can see. 
> > 
> > As far as all IC´s are socketed, this could be a good hint. 
> > Where is the RAM located? which board? I think it has to be the
> > digital board, right? Makes sense to me that the defect could be on
> > this board. Is this the one on the left side inside the unit?
> > 
> > Cheers
> > 
> > 
> > --- In vintagesynthrepair@ yahoogroups. com, "martinreuter"
> > <FrauReuter@ > wrote:
> > >
> > > 
> > > > The battery is good (3,4 V) 
> > > 
> > > Hi, sorry about the poor question: 3,4 V at work oder did you 
> solder
> > it out?
> > > My Matrix 1000 had a battery with 3,4V, too. But it was not 
> good. I
> > measured it in my Hand 
> > > with a digital Voltmeter - a friend told me that this cannot say
> > something about the batterys 
> > > real Status, i have to measure under work. I changed it and now 
> the
> > Matrix works very fine...
> > > 
> > > cheers
> > > Martin
> > >
> >
>

Make sure you backup your patches before you pull the ram.

GD
--- In vintagesynthrepair@yahoogroups.com, Philip <eggwheatis@...> 
wrote:
>
> last software is 3.3 on the source.
> Â 
> but yeh you have a late one...the best one I think with Din Sync.
> Â 
> Have you swapped the ram out yet?
> 
> --- On Fri, 31/10/08, Ambrosia <s_carter@...> wrote:
> 
> From: Ambrosia <s_carter@...>
> Subject: [vintagesynthrepair] Re: Moog Source Sequencer roblem
> To: vintagesynthrepair@yahoogroups.com
> Date: Friday, 31 October, 2008, 11:25 AM
> 
> 
> 
> 
> 
> 
> Hi, it is the last Version, with the DIN Sync.
> The Software has been updated also to the last Revision, I think it
> was 3.2.
> 
> --- In vintagesynthrepair@ yahoogroups. com, "gerryrdahl"
> <gerryrdahl@ ...> wrote:
> >
> > Hi,
> > Looking at the supplemental material,
> > Does your Source have the updated rom and inputs?
> > Your arp an sequencer can run from a sync from
> > a drum machine. If the Source things there is 
> > a drum machine connected, it may be waiting for the clock
> > from it.
> > The din socket will say "SYNC IN" below it.
> > I would check the associated circuit with this.
> > 
> > Hope this helps.
> > GD
> > 
> > --- In vintagesynthrepair@ yahoogroups. com, "Ambrosia" 
<s_carter@> 
> > wrote:
> > >
> > > Hi, thank you for the quick answers... 
> > > 
> > > I did not solder the battery out yet. I measured with the 
units 
> > power
> > > turned off. As far as the unit is working well so far, I 
think, the
> > > battery should not be the problem. 
> > > The Source is not loosing his patches or something else..
> > > 
> > > The LFO LED is blinking, and of course you can change the 
speed of 
> > the
> > > LFO. No problem there as far as I can see. 
> > > 
> > > As far as all IC´s are socketed, this could be a good hint. 
> > > Where is the RAM located? which board? I think it has to be the
> > > digital board, right? Makes sense to me that the defect could 
be on
> > > this board. Is this the one on the left side inside the unit?
> > > 
> > > Cheers
> > > 
> > > 
> > > --- In vintagesynthrepair@ yahoogroups. com, "martinreuter"
> > > <FrauReuter@ > wrote:
> > > >
> > > > 
> > > > > The battery is good (3,4 V) 
> > > > 
> > > > Hi, sorry about the poor question: 3,4 V at work oder did 
you 
> > solder
> > > it out?
> > > > My Matrix 1000 had a battery with 3,4V, too. But it was not 
> > good. I
> > > measured it in my Hand 
> > > > with a digital Voltmeter - a friend told me that this cannot 
say
> > > something about the batterys 
> > > > real Status, i have to measure under work. I changed it and 
now 

> > the
> > > Matrix works very fine...
> > > > 
> > > > cheers
> > > > Martin
> > > >
> > >
> >
>