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Mouse-trak (trackball)

HellasTechn

Apr 14, 2013
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Dear friends Good day.

I have a mouse-trak b-9pind (trackball) this is a mouse that is mainly used on servers or other control systems.

The specific model (b-9pind) has an rs232 DB9 connector.
The thing is that someone thought that this was useless and cut the cable and took the connector.

My problem now is that i have no idea how to connect the wires on the new connector.

The PCB has a 10 pin header connector

Any idea what to do ? Mabe someone somewhere has the same mouse and could measure the cable and tell me ?

Here is a diagram i found online :

http://www.chameleon-group.com/itac/spec_b9pind.htm

And this thing costs a couple of hundred dollars to buy new !!!
 
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Elecbegginner

Mar 24, 2013
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can you open the unit and see if there is pins names on the electronic card ?
you can rewire easily after that
in your case pins 1 & 9 are not used
here is the db9 diagram :
db9pinout_male.gif
 
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HellasTechn

Apr 14, 2013
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can you open the unit and see if there is pins names on the electronic card ?
you can rewire easily after that
in your case pins 1 & 9 are not used
here is the db9 diagram :
db9pinout_male.gif

Yes this is the typical rs232 pinout diagram but on the PCB there are no numbers on the pins and there is no way that i know of to identify them...

Plus that on the connector there are 10 wires (one of them is tha chassis ground) The connector on the PCB is a 10 pin header connector
 
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Elecbegginner

Mar 24, 2013
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Normally on the electronic card where the pins wires are soldered you can check if there is some writing near the solder pads ( they could be underneath ) , that way you can recognize every pin's specific solder pad on the card & rewire .
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Jan 21, 2010
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Alternatively, you may find that the pins are driven from an IC. You may be able to locate the specs and from this determine a likely mapping.

Do you have another similar mouse?
 

HellasTechn

Apr 14, 2013
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Normally on the electronic card where the pins wires are soldered you can check if there is some writing near the solder pads ( they could be underneath ) , that way you can recognize every pin's specific solder pad on the card & rewire .

No luck... nothing is written

Alternatively, you may find that the pins are driven from an IC. You may be able to locate the specs and from this determine a likely mapping.

Do you have another similar mouse?

That is not that simple because jumpers are also involved and there are a couple of ic's...

This is going to be a hard one to repair ! If i ever make it !
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Got any photos?
 

HellasTechn

Apr 14, 2013
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Not at this time...

I have tried a few combinations but no luck so far.

I have to consider getting a new one.
 
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