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17 January 2009, 18:39
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#1 |
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Registered User
Join Date: Nov 2008
Location: London / UK
Posts: 57
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CDTV CD-1200 Trackball Problem
Hey Guys,
I recently picked up a CD-1200 Trackball controller on E-bay (for a grossly high price) and am having a bit of trouble with it. It works except that the trackball wont register any rolls to the left or the right. Anyone ever seen a problem like this or have any experience taking these things apart? Thanks Matt |
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17 January 2009, 18:41
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#2 |
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Global Moderator
Join Date: Aug 2008
Location: Sidcup, England
Posts: 10,300
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Hi Matt,
It sounds like the rollers want cleaning. Can you drop the ball out without stripping it apart? |
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17 January 2009, 18:46
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#3 |
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Registered User
Join Date: Nov 2008
Location: London / UK
Posts: 57
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No, I will have to take the entire unit apart. That was going to be my project tonight... and to see if there are any simple mechanical issues.
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17 January 2009, 18:50
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#4 |
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Global Moderator
Join Date: Aug 2008
Location: Sidcup, England
Posts: 10,300
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Well, I would guess it's either dirty rollers or a lost connection to the transducer on that axis. Should be easy to clean up or fix either way.
These units normally come apart just by taking out a few small crosspoint screws. Certainly qualifies as a do-it-yourself job, I would say!  Just watch out when the ball drops out. Oh, and isopropyl alcohol (IPA) or a little methylated spirit should be okay for cleaning the rollers. Good luck, prowler |
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17 January 2009, 21:44
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#5 |
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Registered User
Join Date: Nov 2008
Location: London / UK
Posts: 57
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So maybe a little bit of premature panic on my part. I disassembled the trackball and could find no mechanical issues, and the rollers were spotless. The back of the circuit board looked a bit dirty from a sloppy solder job on the transducer, so I gave it a scrub with Isopropyl. Put it back together and it worked perfectly. You can never go wrong with a little engineers luck...
Anyway, since I had it open I snapped some pictures in case anyone is interested in what these things look like on the inside. Enjoy! Matt |
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17 January 2009, 21:50
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#6 | |
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Global Moderator
Join Date: Aug 2008
Location: Sidcup, England
Posts: 10,300
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Quote:
 That gunge must have picked up some dust which was shorting out the transducer. You never know what you will find. It's always worth having a poke around and cleaning anything that looks dirty. All's well that ends well! And thanks for the pics, Matt. Shots like this are always interesting. prowler |
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17 January 2009, 22:01
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#7 |
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move.w #$4489,$dff07e
Join Date: Sep 2005
Location: Norfolk, UK
Age: 42
Posts: 2,351
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I've got the same problem with mine but I haven't gotten around to taking it to pieces yet. My main reason for buying it was the joystick ports
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30 October 2010, 20:02
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#8 |
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Posts: n/a
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Has anyone got one of these CDTV trackballs which they are willing to sell? I am willing to pay a good price for a working example...
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