Lincoln Electric 9535

Questions and Answers

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Isaac FryAug 17, 2025
What to do if my Lincoln Electric 9535 trips off under load and the High Temperature Warning Light is on?
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  brendaparsonsAug 17, 2025
  If the Lincoln Electric Welding System comes on but soon trips off while under load and the High Temperature Warning Light glows, ensure all case openings are free for proper air circulation. Also, operate the system at its rated current and duty cycle. Check the fan leads and motor bearings; the fan can be tested on a 115-volt line. If these steps don't resolve the issue, the problem might be a shorted diode or SCR in the power rectifier bridge.
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ycarrollAug 20, 2025
Why does the input contactor chatter on my Lincoln Electric 9535?
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  xjonesAug 20, 2025
  If your Lincoln Electric Welding System machine input contactor chatters, it could be due to a faulty input contactor or low line voltage. Consider repairing or replacing the contactor. If the line voltage is low, check with your power company.
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Vincent ColeAug 23, 2025
What to do if my Lincoln Electric Welding System reduces to low output under load?
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  Joseph PowellAug 23, 2025
  If the Lincoln Electric Welding System machine comes on but reduces to low output under load, and remains there until the load is broken and the arc restarted, it is possible that the excessive load is causing the over-load protection on the control board to operate. Reduce the load. It's also possible that the machine output is shorted, triggering the overload protection on the control board. Turn the machine off and remove the short.
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jon02Aug 25, 2025
How to fix a Lincoln Electric 9535 Welding System that will not shut off?
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  bethany05Aug 26, 2025
  If the Lincoln Electric Welding System welder will not shut off, the input contactor contacts may be frozen. Replace the input contactor.
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Sue AndrewsAug 28, 2025
Why doesn't my Lincoln Electric Welding System have maximum output?
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  Rodney BallAug 28, 2025
  If your Lincoln Electric Welding System does not have maximum output (67 to 71 volts), a possible cause is an input fuse blown, which makes the machine single phased. Replace the fuse or repair the input line, and check the reason for the fault. Another possible cause is one phase of main transformer windings open. In this case you should repair it.
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Cassandra Sullivan DVMAug 31, 2025
What to do if the remote current control is not functioning on my Lincoln Electric Welding System?
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  Terry CabreraAug 31, 2025
  If the optional remote current control on your Lincoln Electric Welding System is not functioning, first ensure the current control switch is in the 'remote' position. Check that leads 75, 76, and 77 are correctly connected on models with a terminal strip. Repair any broken remote control leads, and connect or repair any open leads or connections in the current control circuit. Also, ensure the control PC board plug is securely connected.
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Gabrielle ScottSep 2, 2025
What causes the input contactor to not operate on my Lincoln Electric Welding System?
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  Sarah HoustonSep 2, 2025
  If the Lincoln Electric Welding System machine input contactor does not operate, check the following: supply line fuse (replace if blown, but find the reason first), power circuit (check voltage), power lead (repair if broken or loose), voltage (check against instructions), thermostats (ensure the fan is operating and there are no obstructions, operate at normal current and duty cycle, and replace the High Temperature Warning Light if defective), input contactor coil (replace if open), 115V pilot transformer (replace if open), Power ON-OFF switch (replace if not closing), lead in 115V starter circuit (replace if broken or loose), and thermostats (replace if defective after turning input power off and checking with a continuity meter).
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Rebecca AndersonSep 5, 2025
Why does my Lincoln Electric Welding System trip off under no load or make excessive noise?
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  treidSep 5, 2025
  If your Lincoln Electric Welding System machine comes on but trips off when under no load or makes excessive noise like it is loaded, the power bridge rectifier may have a shorted diode or SCR. Also, there may be a short in the transformer. Another possible cause is the fan hitting the vertical baffle, so clear the fan.
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Tamara Andrews DVMSep 8, 2025
What to do if my Lincoln Electric 9535 Welding System has low output even though the contactor closes?
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  hrobinsonSep 8, 2025
  If the Lincoln Electric Welding System machine input contactor closes but has no or low output, and the open circuit voltage should be 67 to 71 volts, check the electrode or work lead for looseness or breakage and repair connections. Also, check for an open transformer primary or secondary circuit and repair it. Ensure the supply line fuse isn't blown and replace it if it is, checking the fuse size. See if the input line is grounded, causing single-phase input, and repair the input to the machine if so. Verify input leads are connected to the contactor and connect them if they aren't. Also, check the latching resistor R3 for being open and replace it, checking leads to the resistor and repair if defective.
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jamesjohnsonSep 12, 2025
Why is the welding arc variable or sluggish on my Lincoln Electric 9535 Welding System?
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  Nathaniel GonzalezSep 12, 2025
  If you're experiencing a variable or sluggish welding arc with your Lincoln Electric Welding System, start by checking and cleaning the work or electrode cable connections to ensure they are not causing poor contact. Verify that the current is appropriate for the rod type and size you are using. Also, inspect the welding leads to confirm they are adequately sized.