Job Packet / WeldKing / MultiSonic220

Packet use

Use this packet when the complaint involves MIG dead with stick or TIG still healthy, all lights flashing, no wire feed, full-speed feed on power-up, or abnormal process-state behavior.
Primary guide: MultiSonic220 guide
Bench sheet: MultiSonic220 bench test
Brand references: WeldKing local reference manifest, WeldKing fault-branch matrix

Intake snapshot

Item	Record
Serial or shop tag
Exact complaint
Failing process
Working process, if any
Polarity as found
Torch, spool gun, or TIG kit attached
Display behavior on power-up
Feed behavior at idle

Likely parts and accessories to stage

Item	Why stage it early
Known-good MIG torch and consumables	fastest way to remove torch-side false faults
Known-good clamp and lead set	current-path and polarity complaints stay common
TIG torch or stick lead for alternate-process proving	needed to separate MIG-only failures from shared power-source faults
Meter and connector tools for ribbon or support-power checks	flashing display and full-speed feed complaints require them

Official parts-entry shortcuts

Use these after the bench evidence proves the complaint follows an external branch rather than the shared power source.
Broad parts path: official MultiSonic220 parts category
Aluminum spool-gun kit XOM99035: official product page
SpoolKing 24DL spool gun 07NS1010: official product page
PRO17 TIG torch WAT31100: official product page
FC25-HD foot pedal 07002510: official product page

First branch decisions

If you see...	Stay in this branch first
MIG dead but stick and TIG still work	polarity connector and MIG-only branch
All lights flashing	ribbon, panel, or support-power branch
No wire feed with otherwise normal machine	debug or process-state branch first
Full-speed feeder on startup or self-shutdown	power-board or support-power branch

Local files to open first

assets/reference_doc/WeldKing/MultiSonic220/B.067RM.183-D.pdf
assets/reference_doc/WeldKing/MultiSonic220/B.067RM.205-H.pdf
assets/reference_doc/WeldKing/MultiSonic220/MultiSonic220_电路图.jpg
workbook sheet MultiSonic220 in assets/reference_doc/all_models/troubleshoot_notes.xlsx

Bench workflow

Confirm polarity connector and process state before opening the case.
Run MultiSonic220 bench test.
Prove one healthy baseline process first.
Retest the failing process only after the shared power source is clearly healthy.

Release signoff

Check	Result
Startup stable and no flashing display	pass / fail
MIG baseline restored	pass / fail
Secondary process still healthy	pass / fail
No idle feed, runaway motor, or self-shutdown after power cycle	pass / fail
Covers, grounds, and lead routing restored	pass / fail

Technician: __________ Date: __________