Interactive repair prechecks and diagnostic selectors

Welder Repair Tools

Use Tools when a technician needs a guided precheck or decision flow instead of reading a full reference page. Tools should turn WelderData’s diagnostic logic into practical selectors: answer the evidence you have, then open the matching workflow, board reference, component test or repair case.

Start here by tool purpose

Choose the type of decision you need. Some tools already exist; other entries here are productized tool directions that should be built after the underlying diagnostic pages are stable.

Precheck

Replacement safety and power-device prechecks

For IGBT/MOSFET replacement risk, bridge checks, DC bus shorts, driver evidence and staged power-up decisions.

Selector

Symptom-to-workflow diagnostic selectors

For no output, breaker trip, protection light, gas/HF faults, weak current and trigger problems.

Process

TIG, MIG and plasma process tools

For TIG no-HF checks, MIG wire-feed/gas split, plasma no-arc and CT-312 mode comparison.

Measurement

Connector and board-evidence helpers

For X/P/CON connector clues, control rails, board-stack layer decisions and feedback evidence.

How this section relates to Diagnostics

Tools are guided interfaces built from diagnostic logic. Diagnostics remain the full workflow pages. A tool should never replace the safety notice or measurement discipline: it should route the user to the next correct page after collecting evidence.

Replacement safety and power-device prechecks

Use these before replacing IGBTs, MOSFETs, rectifier modules, output diodes or boards that may fail again if the root cause is still present.

IGBT Replacement PrecheckExisting tool for staged checks before installing and powering replacement IGBTs. Power Device Failure IndexIGBT, MOSFET, rectifier bridge, output diode and repeated failure routes. IGBT / MOSFET Keeps BlowingRoot-cause route before replacing another device. IGBT Module TestingComponent-level checks and replacement-risk context. Rectifier Bridge / Diode Module TestingBridge rectifier and diode-mode checks. ZX7 Breaker Trip / MOSFET ShortDC bus, MOSFET, driver transformer and output-load split.

Symptom-to-workflow diagnostic selectors

These are the best next tool directions because the site already has enough underlying diagnostic pages to support them.

Start from Visible FaultUse the Faults homepage until dedicated selector tools are built. Gas / HF / No Output Selector BaseBest source for a future gas-HF-no-output interactive tool. Small Inverter Selector BaseDead, relay, fan/no output, protection and MOSFET routing logic. CT-312 Mode Selector BaseMMA/TIG/plasma mode comparison and board-stack decision logic. ZX7-160/200 Repair Selector BaseKnown-model routing for compact ZX7 repair flows. TIG Fault Selector BaseTorch, gas, HF, 2T/4T, post-flow, foot pedal and current logic.

TIG, MIG and plasma process tools

Use these references as the basis for future process-specific interactive tools.

TIG No-HF Tool BaseGas works, then HF command, HF relay, HV pack and output must be separated. TIG No-Current After HF Tool BaseStart support works but current permission, drive or output path is blocked. MIG Wire-Feed / Gas Tool BaseP13 trigger/jog, P14 feeder output and P17 gas output split. MIG No Wire Feed RouteFeeder motor output and control signal path. Plasma No Arc, Air Works RouteAir/gas support, HF/pilot start, shared output, torch and work return. LGK Plasma Cutter Tool BaseLGK60L and LGK100L gas, fan, protection, no-output and IGBT routes.

Connector and board-evidence helpers

Use these when the user has measurement or connector evidence and needs help choosing the next workflow.

Connector Measurement Point Helper BaseX16, X17, X13, X14, P12, P14, P17, CON5 and CON6 evidence. Board Evidence EntryStart from the board or connector when the machine is already open. Board-Stack Decision BaseBottom input/DC bus, top driver/switching, middle transformer/output layer. LGK Control Rail Helper BaseControl rails and connector voltages for plasma cutter diagnosis. Feedback Evidence Helper BaseCurrent feedback evidence for weak current, no output and false protection. Repair Case Pattern EntryUse cases when the evidence resembles a known misdiagnosis pattern.