Lincoln Electric IM10063 TCV400 - Manual (Page 23)

E-4 TROUBLESHOOTING E-4
TCV400
Observe all Safety Guidelines 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 your
Local TAFA Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Poor arc striking with semiautomatic
or automatic wire feeders.
Poor arc characteristics.
1. Poor work connection.
2. Improper procedures.
3. Defective Control PC Board.
1. Defective Control PC Board.
2. Capacitor(s) in output circuit
failed. A failure is indicated if the
small vent plug on top of a capac-
itor is raised or blown out.
1. Work connection must be ade-
quate for application.
2. Adjust procedures for improved
starting.
3. Replace. See Procedure for
Replacing PC Boards.
1. Replace. See Procedure for
Replacing PC Boards.
2. Replace entire bank of capaci-
tors. Do not replace individual
capacitors.
WARNING: The liquid electrolyte
in these capacitors is toxic. Avoid
contact with any portion of your
body. Clean up vented electrolyte
using rubber gloves and a water
dampened cloth. Any electrolyte
which gets on skin, clean with
soap and water.