OBERHEIM SYNTH

On 20 Sep, 2013, at 1:00 AM, Joost den Hertog wrote:

> the oberheim responds not on a midi-in massage.

Massage or message? If message, all MIDI communication doesn't work?
Isn't it just problem of some setting? MIDI channel, filter or
similar? Or hardware - bad cable, MIDI interface...?

Have you tried some reset or test mode? There must be something like
this...

If nothing helps, it's time to open it, check cables and connectors,
reseat them, also chips in socket (if any), and check the way of MIDI
signal. Maybe optoisolator on the input is dead, or some other
component.

> when starting up the Mx display tells the battery is low
>
> is this normal?

Probably it's normal, when battery is low :-) Maybe it's time for
changing it.

Daniel Forro

You are welcome.

Here you can find some schematics and tips:

http://users.ece.gatech.edu/lanterma/obmx/

Here somebody wrote that changing the battery repaired MIDI In functionality:

http://www.sonicstate.com/synth_reviews/oberheim_obmx/6/

Google is your friend.

Daniel Forro

On 20 Sep, 2013, at 4:17 PM, Joost den Hertog wrote:

thanks Daniel,
it is message, and harware,cabel and settings i have checked.
to change the battery i have to open it up and i will see.

Op 9/19/13 6:18 PM, Daniel Forró schreef:

On 20 Sep, 2013, at 1:00 AM, Joost den Hertog wrote:

> the oberheim responds not on a midi-in massage.

Massage or message? If message, all MIDI communication doesn't work?
Isn't it just problem of some setting? MIDI channel, filter or
similar? Or hardware - bad cable, MIDI interface...?

message..
no,,

Have you tried some reset or test mode? There must be something like
this...

i am not familiar with that

If nothing helps, it's time to open it, check cables and connectors,
reseat them, also chips in socket (if any), and check the way of MIDI
signal. Maybe optoisolator on the input is dead, or some other
component.

ok..

> when starting up the Mx display tells the battery is low
>
> is this normal?

Probably it's normal, when battery is low :-) Maybe it's time for
changing it.

i will..

Daniel Forro