Vintage Synth Repair

Hi Guys,

Hope someone here can help.

I have a Matrix 1000. It started missing notes - so I got a few
CEM3396 chips and replaced a couple of them. The missing notes
returned but now it is behaving strangely on different patches. Most
patches sound right and I'm getting all 6 voices but now and then on
certain patches it behaves very wierdly. For example on a patch that
should be "Monophonic" and FAT I am getting POLYphonic and weedy
sounds - and then playing the six notes in succession within that
weedy patch (105) they jump octaves on certain ones.

Anyone any ideas - I don't think it's the CEM chips now.
What else could/should I be looking at replacing?

Cheers in advance.
Tom

Vinci i biglietti per FIFA World Cup in Germania!

>    
>   Ciao
>   Fabio 
> 
> Quazimodo <noddyspuncture@...> ha scritto:
>           Hi Guys,
> 
> Hope someone here can help.
> 
> I have a Matrix 1000. It started missing notes - so I got a few
> CEM3396 chips and replaced a couple of them. The missing notes
> returned but now it is behaving strangely on different patches. Most
> patches sound right and I'm getting all 6 voices but now and then on
> certain patches it behaves very wierdly. For example on a patch that
> should be "Monophonic" and FAT I am getting POLYphonic and weedy
> sounds - and then playing the six notes in succession within that
> weedy patch (105) they jump octaves on certain ones.
> 
> Anyone any ideas - I don't think it's the CEM chips now.
> What else could/should I be looking at replacing?
> 
> Cheers in advance.
> Tom
> 
> 
> 
>          
> 
>  		
> ---------------------------------
> Vinci i biglietti per FIFA World Cup in Germania!
>

>
> Hi:
> I did have a similar problem some time ago. All patches was mono, not
> unison, simply can't play more than 1 note. I cure this resetting the
> CPU, you can do that without loose your patches (But do a back up just
> in case...)
> Power it up pressing Enter.
> Good Look
> 
> Sebo
>

Thanks for your reply Fabio.

The IC sockets..? Really..?
Do you have previous experince of these sockets actually being the fault?

Cheers.
TOM

--- In vintagesynthrepair@yahoogroups.com, fabio delben
...> wrote:
>
> Try to replace the CEM IC's sockets, they are really poor quality
sockets.
>
> Ciao
> Fabio
>
> Quazimodo ...> ha scritto:
> Hi Guys,
>
> Hope someone here can help.
>
> I have a Matrix 1000. It started missing notes - so I got a few
> CEM3396 chips and replaced a couple of them. The missing notes
> returned but now it is behaving strangely on different patches. Most
> patches sound right and I'm getting all 6 voices but now and then on
> certain patches it behaves very wierdly. For example on a patch that
> should be "Monophonic" and FAT I am getting POLYphonic and weedy
> sounds - and then playing the six notes in succession within that
> weedy patch (105) they jump octaves on certain ones.
>
> Anyone any ideas - I don't think it's the CEM chips now.
> What else could/should I be looking at replacing?
>
> Cheers in advance.
> Tom
>
>
>
>
>
>
> ---------------------------------
> Vinci i biglietti per FIFA World Cup in Germania!
>

Vinci i biglietti per FIFA World Cup in Germania!