JohnMac Posted October 7, 2009 Share Posted October 7, 2009 Hi folks, Please could I tap into the wealth of expertise regarding the MAC 500. I have one in which the rotating gobo wheel refuses to rotate. With no power on the fixture, the motor and gears freely rotate. After reset and homing, when asking for gobo rotation, the gear just appears to oscilate back and forth. Am I right in thinking that if it rotates freely with no power, it's likely to be the driver on the circuit board? Regards John Mac. Link to comment Share on other sites More sharing options...
KevinE Posted October 7, 2009 Share Posted October 7, 2009 Most likely a wiring loom fault, followed by driver IC. The loom is easily buzzed through with a multimeter..disconnect the motor first. I assume you're not doing something daft with the desk. Link to comment Share on other sites More sharing options...
LXbydesign Posted October 8, 2009 Share Posted October 8, 2009 Also , just to try , put the fixture on test-run. If it fails to rotate during that cycle, then its hardware prob. If it s ok , then more than likely your doing something wrong up at control end!! Link to comment Share on other sites More sharing options...
Tin Posted October 8, 2009 Share Posted October 8, 2009 Hi folks, Please could I tap into the wealth of expertise regarding the MAC 500. I have one in which the rotating gobo wheel refuses to rotate. With no power on the fixture, the motor and gears freely rotate. After reset and homing, when asking for gobo rotation, the gear just appears to oscilate back and forth. Am I right in thinking that if it rotates freely with no power, it's likely to be the driver on the circuit board? Regards John Mac. A simple test will be to swap the connecors on the main board with the gobo wheel, if it rotates then you have a faulty driver chip. Link to comment Share on other sites More sharing options...
JohnMac Posted October 9, 2009 Author Share Posted October 9, 2009 Thank you all, :up: :up: As KevinE suggested used a multimeter to check wiring, found two faults, a broken crimp socket in one of the connectors, and a broken wire in the wiring loom. Soldered a new wire on to the broken one and used it as a draw wire to pull new wire through. Will crimp new terminals on and test on Monday. ;) I suspect that only one winding on the motor was being energised which gave the vibration effect seen. Regards John Mac. Link to comment Share on other sites More sharing options...
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