Lincoln Electric SVM150-A Manuel D’Utilisation

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 troubleshooting assistance before you proceed.  Call
1-800-833-9353.

No welding output in all modes.
The engine operates normally.  The
auxiliary output is normal.

5. Perform the Stator Voltage

6.  Perform  the  Output Rectifier

7.  Perform the Power Module

8. Perform the Analog Power

9. Check the output control

potentiometer and associated
wiring.

10. The Control Board may be

faulty.

No welding output in all modes.
Also no auxiliary power.  The
engine operates normally at
approximately 3700 RPM.

1.  Check the brushes for wear and

proper contact to the rotor slip
rings.

2.  Make sure the engine is operat-

ing at the correct high idle
speed (3700 RPM).

3.  Check for loose or faulty con-

nections or leads at the auxiliary
output receptacles and/or the
welder output terminals.  See
the Wiring Diagram.  

1.  Perform  the  Rotor Resistance

2.  Perform  the  Flashing and

Rotor Voltage Test.  If the
“flashing” voltage is not present,
the battery board or leads #201
or #200 may be faulty.  See the
Wiring Diagram.  Also, make
sure that lead #5H has continu-
ity (zero ohms) to ground.

3. 

 

Check the field diode and
capacitor.  Replace if neces-
sary.

4.  Perform  the  Stator Voltage