darthblade11 Posted January 9, 2012 Share Posted January 9, 2012 Hey BR! Anyone know what the smd resistor values are of resistors r119 and r120? The magic smoke was let out and now the DMX is not working..http://www.blue-room.org.uk/public/style_emoticons/default/unsure.gif (cannot identify the resistor value as they are damaged and I don't have the schematic) the pcb version is 1.1 and its a marin mx-4 Thanks! Link to comment Share on other sites More sharing options...
DrV Posted January 9, 2012 Share Posted January 9, 2012 Hey BR! Anyone know what the smd resistor values are of resistors r119 and r120? The magic smoke was let out and now the DMX is not working..http://www.blue-room.org.uk/public/style_emoticons/default/unsure.gif (cannot identify the resistor value as they are damaged and I don't have the schematic) the pcb version is 1.1 and its a marin mx-4 Thanks! 2R2. You'll almost certainly need to replace IC109 (75176) too. Dave Link to comment Share on other sites More sharing options...
darthblade11 Posted January 10, 2012 Author Share Posted January 10, 2012 Thanks Dave! will replace them as soon as possible and see if they work..<div><br></div><div>Also I am curious.. do you know a possible reason why they would blow? There was no surge in the line or anything like that?</div><div>And do you have the schematic for the PCB?</div><div><br></div><div>thank you for the quick reply!</div> Link to comment Share on other sites More sharing options...
darthblade11 Posted February 14, 2012 Author Share Posted February 14, 2012 so I finally got around to getting the resistors and smd rs485 chip but have no idea how to extract the pcb help would be appreciated.. :) thanks Link to comment Share on other sites More sharing options...
JayeJsav Posted February 18, 2012 Share Posted February 18, 2012 Hiya, As you look at the PCB in-situ from above (light on it's back), there is a screw that goes in, from left to right, through a metal lug at the top of the board. Take this scrffew out, and the board (and it's back plate) will slot-out of the unit. Take care though as the cables aren't long enough to pull it clear as it comes up and out of the body. HTH Jaye Link to comment Share on other sites More sharing options...
darthblade11 Posted March 27, 2012 Author Share Posted March 27, 2012 Hiya, As you look at the PCB in-situ from above (light on it's back), there is a screw that goes in, from left to right, through a metal lug at the top of the board. Take this scrffew out, and the board (and it's back plate) will slot-out of the unit. Take care though as the cables aren't long enough to pull it clear as it comes up and out of the body. HTH Jaye Thank you! :) much appreciated Link to comment Share on other sites More sharing options...
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