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PRECISION TIG 185
TROUBLESHOOTING & REPAIR
F-6 F-6
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TROUBLESHOOTING GUIDE Observe Safety Guidelines
detailed in the beginning of this manual.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
1-888-935-3877.
OUTPUT PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
Machine regularly over heats - ther-
mostat opens. Yellow light on front
panel glows. The fan runs but the
machine has no output.
The machine does not have output
in the Stick mode. The machine
operates correctly in the TIG mode.
Machine regularly over heats - ther-
mostat opens. Yellow light on front
panel glows. The fan runs but the
machine has no output.
The machine does not have output
in the Stick mode. The machine
operates correctly in the TIG mode.
1. The thermostat(s) may be faulty.
Check or replace.
2. The control board may be faulty.
1. Check the Stick/TIG switch(S3)
and associated leads. See
wiring diagram.
2. The control board may be faulty.