Power module, Test, Troubleshooting & repair – Lincoln Electric COMMANDER SVM145-B User Manual
Page 111: Warning power module test
TROUBLESHOOTING & REPAIR
F-55
F-55
COMMANDER 300
WARNING
POWER MODULE TEST
Service and repair should be performed by only Lincoln Electric factory trained personnel.
Unauthorized repairs performed on this equipment may result in danger to the technician
or machine operator and will invalidate your factory warranty. For your safety and to avoid
electrical shock, please observe all safety notes and precautions detailed throughout this
manual.
If for any reason you do not understand the test procedures or are unable to perform the
test/repairs safely, contact the Lincoln Electric Service Department for electrical trou-
bleshooting assistance before you proceed. Call 1-800-833-9353 (WELD).
TEST DESCRIPTION
This test will help determine if the power modules are shorted. This is a resistance test,
not a voltage test. This test will only help diagnose a problem in the “power” section of
the module. Other PC board components could be faulty.
MATERIALS NEEDED
Volt/Ohmmeter (analog)
3/8" wrench
7/16" wrench
This procedure should take approximately 45 minutes to perform.