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removing_rf_mod_cap [2019/07/09 19:22]
vik
removing_rf_mod_cap [2019/07/09 19:25] (current)
vik
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 ====== Removing the RF(capacitor) modification ====== ====== Removing the RF(capacitor) modification ======
  
-From Mid 2018 to Mid 2019 a small capacitor was added to MS2000, RM2000 controllers to reduce RF emissions. When this capacitor fails it grounds the oscillator preventing the microcontroller from running. ​When this happens ​controller doesn'​t respond to serial/usb input, joystick, knob and the LCD is blank or full of bars. +Between mid 2018 to mid 2019 a small capacitor was added to MS2000, RM2000 controllers to reduce RF emissions. When this capacitor fails it grounds the oscillator preventing the microcontroller from running. ​The controller doesn'​t respond to serial/usb input, joystick, knob and the LCD is blank or full of bars. 
  
 Fortunately removing the failed capacitor restores the controller function. This guide walks you thru on how to access the controller, find the capacitor and remove it.  Fortunately removing the failed capacitor restores the controller function. This guide walks you thru on how to access the controller, find the capacitor and remove it. 
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 Some controllers might have an add-on card like the autofocus or crisp system blocking access to the capacitor. Unmount it by unscrewing the four screws holding it in place. ​ Some controllers might have an add-on card like the autofocus or crisp system blocking access to the capacitor. Unmount it by unscrewing the four screws holding it in place. ​
  
-{{ ::​removing_autofocus.jpg?​direct&​600 |Remove add-on card}}+[{{ ::​removing_autofocus.jpg?​direct&​600 |Remove add-on card}}]
  
-Then look for the oscillator Y1, next to it are two capacitors, one white and another mustard color. Remove the white capacitor (refer to the attached picture), you may have to remove the mustard one as well. +Then look for the oscillator Y1, next to it are two capacitors, one white and another mustard color. Remove the white capacitor (refer to the attached picture) ​with soldering iron, you may have to remove the mustard one as well. 
  
-{{ ::​ms2000_fixing_the_cap_mod.jpg?​direct&​600 |Remove the white capacitor}}+[{{ ::​ms2000_fixing_the_cap_mod.jpg?​direct&​600 |Remove the white capacitor}}]
  
 Then power the controller and test it, if it doesn'​t work, put the mustard one back in and test it again. ​ Then power the controller and test it, if it doesn'​t work, put the mustard one back in and test it again. ​
  
-If that didn't work either the board might be more damaged. +If that didn't work either the board might be more damaged, contact ASI to arrange an RMA.
  
 They are bypass caps, the system can work without them. But if they are broken, they short the voltage rails and prevent the system from booting. Hopefully, the power regulators onboard haven'​t failed. ​ They are bypass caps, the system can work without them. But if they are broken, they short the voltage rails and prevent the system from booting. Hopefully, the power regulators onboard haven'​t failed. ​
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removing_rf_mod_cap.txt · Last modified: 2019/07/09 19:25 by vik