bobalobus Posted January 9, 2009 Share Posted January 9, 2009 Hey all I've been having a problem with one of my mac250s the last few days. Every time it is booted up it says goer error. I have tried cleaning the magnet and the sensor I have resoldered the sensor and also tried the colour wheel sensor I have also checked that the loom is intact. Any other things I can try that have worked for you? I shall contact Martin Monday if nothing comes to light . thanks bob Link to comment Share on other sites More sharing options...
mac.calder Posted January 9, 2009 Share Posted January 9, 2009 Here are a couple of little tips about diagnosing things like gobo wheel errors: Turn on the fixture. Make sure that the wheel spins. Turn off the fixture. If the wheel spins, then you are looking at a sensor error (as I gather you have deduced) step one, before touching the sensor and the magnet is to grab an ohm meter (or a multimeter on the ohms setting) and put one probe on each terminal. Then spin the wheel. Now I cannot remember which way Martin do things (normally open or normally closed) but it should be fairly obvious when the magnet passes the sensor. If there is no change in the ohm meter readings when the magnet passes the sensor, you need to look at alignment and polarity of magnet. Next, on the mother board, swap the sensor with a known good sensor (ie colour wheel) and if it is an old fixture, during startup you will need to ensure that the colourwheel spins past it's sensor during the gobowheels homing (older fixtures lacked the memory to do all parameters at once, and will do a staged bootup. If problem persists on the same error channel (ie goerr) then there are motherboard issues and you need to talk to martin. If it doesn't, then repeate the ohm meter test at the motherboard. If this test still passes... you need to talk to martin. Link to comment Share on other sites More sharing options...
millhouse Posted January 9, 2009 Share Posted January 9, 2009 Hi, after bashing my head against a brick wall for hour I built a RJ45 to martin loom adaptor, so I cantest looms easily. Most likely to be the loom try bleeping out each core from pcb to motor while moving the fixtures pan/tiltone at a time. If the bleep drop then you have fractured loom probably where it goes through the yoke arm if all bleep ok check the cable as it may have the insulation missing (rubs in the arm) you will see copper, (it shorts to the metal casing) Hope this helps Craig Moving Light Technology Link to comment Share on other sites More sharing options...
KevinE Posted January 9, 2009 Share Posted January 9, 2009 When the fixture resets, is the gobo wheel actually turning? Just because the sensor & magnet is ok doesn't mean the micro is actually seeing the signal. Goer usually occurs when the reset has 'timed out'and no index signal has occurred. If the motor is turning ok and in the right direction, make sure the gap is cloe enough to actually actuate the hall sensor. Hall sensors are generally 3-legged devices and need a logic supply input before they'll issue an output signal back to the micro. Link to comment Share on other sites More sharing options...
bobalobus Posted January 10, 2009 Author Share Posted January 10, 2009 What I have done tonight is taken a module from one of my other Mac's and swapped it the error still occurred. so Im guessing its the loom I have checked the cables and there's no damage and shall do a beep test on the cables tomorrow night also I have enough mac that has a similar problem but I know it is the circuit board. do I just ring up martin for spares thanks bob Link to comment Share on other sites More sharing options...
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