Repair index

ZX7-160/200 Repair Index

A compact ZX7-160/200 repair index connecting visible symptoms to board-stack and secondary-output pages.

Start here

Use this index for ZX7-160/200 small inverter stick welders. Start from visible behavior: dead machine, relay clicks, fan runs no arc, indicator on no output, protection light, weak current, breaker trip or MOSFET/output diode failure.

Board-stack map

Bottom board covers startup and auxiliary power. Top inverter board covers switching and driver. Middle board covers transformer, output diode group, reactor, shunt, thermal and feedback evidence.

Repair order

For dead/no-power, start at bottom board. For breaker trip/MOSFET short, isolate DC bus and top-board devices. For no output with power present, check drive permission and middle-board output path before replacing the whole board stack.

Start from these records

Model hubOpen related WelderData record.Board-stack referenceOpen related WelderData record.Dead no powerOpen related WelderData record.Relay clicks no startOpen related WelderData record.Power indicator on, no outputOpen related WelderData record.Fan runs, no arc outputOpen related WelderData record.Weak current / cannot adjustOpen related WelderData record.Protection lightOpen related WelderData record.