Humey Posted January 5, 2012 Share Posted January 5, 2012 I use a LSC Maxim 24 channel desk on smaller lighting jobs where teachers/students require me to be in the space with them (as opposed to being in the lighting box). The desk has developed a problem in which the channels dim on the own accord. I have troubleshooted this and it seems to be a problem with the master fader for the yellow bank. Basically what happens is if I bring up a single channel to full it begins to fluctuate its output, varying any where between 100% and 10%. The fader itself is set to 100 but the output on the monitor and the fixture itself shows it changing. Any idea's what this could be? Link to comment Share on other sites More sharing options...
Brian Posted January 5, 2012 Share Posted January 5, 2012 Does wiggling the yellow master affect the result? It sounds like a broken fader, or at least a dry solder joint on it. Link to comment Share on other sites More sharing options...
Humey Posted January 5, 2012 Author Share Posted January 5, 2012 Yep, wiggling it makes a difference. Any way of me checking whether it is a dry joint? Link to comment Share on other sites More sharing options...
Brian Posted January 5, 2012 Share Posted January 5, 2012 You'll need to open it up. Have a look at where the legs are soldered on the PCB. If you search the web for 'dry joints' you'll find some examples. If it's not a dry joint then it'll be either crud inside the pot causing poor contact or I have also seen slide pots which have been physically damaged. Don't bother trying to clean the pot with any sort of switch cleaner unless it is designed for the specific job. It'll work for a short while and then will fail completely. Link to comment Share on other sites More sharing options...
Humey Posted January 5, 2012 Author Share Posted January 5, 2012 No signs of dry joint. Sending it away to b repaired may be the answer. Thanks for your help Brian. Link to comment Share on other sites More sharing options...
mac.calder Posted January 5, 2012 Share Posted January 5, 2012 LSC are generally pretty awesome when it comes to customer service. They build 99% of the stuff themselves onsite, and the staff are all really great, so it may be worth giving them a call before you send it in. Link to comment Share on other sites More sharing options...
Don Allen Posted January 5, 2012 Share Posted January 5, 2012 LSC have diagnostics built into their consolles including fader testing and flash button testing:16.5 DIAGNOSTICSThe maXim provides diagnostics which allow you to;?? Test the operation of all buttons, LEDS, faders, the EDIT wheel and the floppy disk.?? Check internal battery voltage and charge condition.?? Check memory capacity and usage.DIAGNOSTICS MODETo select diagnostics mode, press and hold [function] tap [ok] release [function]Several unlabelled red bank [F/A] buttons flash to show they are active.LED AND BUTTON TESTPress red bank [F/A] (1).All LEDs should be lit. If a LED is not lit, then there is a possible problem at this particular LED.To test a button, press it and its LED will go off. This indicates a command from that button hasbeen received at the processor and it is operating correctly.To exit, press and hold [function] tap [ok] release [function]FADER TESTPress red bank [F/A] (2).To test a fader, press the [F/A] button for that fader then move the fader. Use the [<] button abovethe Stack Master to select the IN fader and the [<] button above the Stack master to select theOUT fader. The display reads from 0 to 255 as the fader is moved through its range.To exit, press and hold [function] tap [ok] release [function] This is a usefull function as you can see dirty or faulty faders and faders that do not go to zero. Link to comment Share on other sites More sharing options...
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