Lincoln Electric SVM100-A service manual Troubleshooting Guide, Output Problems

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F-3			TROUBLESHOOTING & REPAIR
	TROUBLESHOOTING GUIDE					Observe Safety Guidelines
					detailed in the beginning of this manual.
		PROBLEMS		POSSIBLE AREAS OF	RECOMMENDED
		(SYMPTOMS)		MISADJUSTMENT(S)	COURSE OF ACTION
				OUTPUT PROBLEMS
		Major Physical or Electrical		1. Contact The Lincoln Electric
		Damage is Evident.		Service Dept. (216) 383-2531
				or 1-800-833-9353 (WELD).
		Machine is Dead -		1. Make certain that the input	1.	Check input power switch (S1).
		No Output - No Fan		power switch is in the “ON”		It may be faulty.
		No Displays.		position.	2.	Check for open or broken pri-
				2. Check the input voltage at the		mary leads to main transformer
				machine. Input voltage must		(T1).
				match the rating plate and	3.	Check auxiliary (115vac) power
				reconnect the panel.
						winding in the main transformer
				3. Blown or missing fuses in		(T1).
				input line.
		Fan runs - Display and control		1. Check for proper input	1.	Secondary thermostat may be
		panel dark. No output from		voltages. As per nameplate		open. Check for glowing yel-
		machine in either Stick or TIG		and reconnect panel.		low light on front panel
		modes.			2.	Control transformer (T2) may
						be faulty. See Control
						Transformer Voltage Test.
					3.	Protection/Snubber board may
						be faulty. See
						Protection/Snubber Board
						Continuity Test.
					4.	Control Board may be faulty.
						Replace.

CAUTION

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 1-800-833-9353.

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