Perform, Power board, Resistance test – Lincoln Electric INVERTEC V250-S User Manual
Page 51: Perform the, Power board resistance, Test . also check for leaky or, Troubleshooting & repair, Test description, Materials needed, Power board resistance test
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TROUBLESHOOTING & REPAIR
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INVERTEC V250-S
TEST DESCRIPTION
This test will help determine if the Power Board has any “shorted” or “leaky” power diodes or
Insulated Gate Bipolar Transistors. Also it will help to indicate any “shorted” filter capacitors.
MATERIALS NEEDED
Analog voltmeter/ohmmeter (Multimeter)
Wiring diagram
POWER BOARD RESISTANCE TEST
Service and repair should be performed only by Lincoln Electric factory trained per-
sonnel. Unauthorized repairs performed on this equipment could result in danger to
the technician or the machine operator and will invalidate your factory warranty. For
your safety and to avoid electrical shock, please observe all safety notes and precau-
tions detailed throughout this manual.
If for any reason you do not understand the test procedures or are unable to perform
the tests/repairs safely, contact the Lincoln Electric service department for technical
troubleshooting assistance before you proceed.
Call (216) 383-2531 or (800) 833-9353 (WELD).
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WARNING