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SECTION 6 TROUBLESHOOTING
6.4 Testing and Replacing Components
• Replace a PC board only when a problem is isolated to that board.
• Always disconnect power before removing or installing a PC board.
• Do not grasp or pull on board components.
• Always place a removed board on a static free surface.
• If a PC board is found to be a problem, check with your ESAB distribu-
tor for a replacement. Provide the distributor with the part number of
the board as well as the serial number of the power source.
• Do not attempt to repair the board yourself. Warranty will be voided if
repaired by the customer or an unauthorized repair shop.
NOTICE
Power Semiconductor Components
Categories of power semiconductors include;
• Power Rectiers
• Modules containing the free wheeling diodes and IGBTs
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