Editing Argon supply voltage troubleshooting
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Resistance of R7 can be measured with multimeter from test points marked in the image. The correct reading is the marked resistance +/- 2 ohm. It is possible to replace (desolder and solder) new resistor without removing heatsink from the PCB by approaching PCB from the side of the board. | Resistance of R7 can be measured with multimeter from test points marked in the image. The correct reading is the marked resistance +/- 2 ohm. It is possible to replace (desolder and solder) new resistor without removing heatsink from the PCB by approaching PCB from the side of the board. | ||
− | It is recommended to replace R7 with similar size 5W 100 ohm resistor such as {{Farnell| | + | It is recommended to replace R7 with similar size 5W 100 ohm resistor such as {{Farnell|85332100}} |
[[File:Argoninrushlimiter.jpg|thumb|Resistor R7 measurement points inside Argon]] | [[File:Argoninrushlimiter.jpg|thumb|Resistor R7 measurement points inside Argon]] | ||
====Reason for R7 burn==== | ====Reason for R7 burn==== | ||
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Measuring condition of B3 is possible with multimeter's diode check function. Check all four diodes from the test points marked in the image. Multimeter red lead goes to anode and black to cathode. All diodes should give reading of 0.4 to 0.5 Volts. | Measuring condition of B3 is possible with multimeter's diode check function. Check all four diodes from the test points marked in the image. Multimeter red lead goes to anode and black to cathode. All diodes should give reading of 0.4 to 0.5 Volts. | ||
[[File:Argondiodebridge.jpg|thumb|Diode bridge B3 measurement points circled]] | [[File:Argondiodebridge.jpg|thumb|Diode bridge B3 measurement points circled]] | ||
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