Job Packet / WeldKing / MigSonic145

Packet use

Use this packet when the complaint involves low output, click-cycling on power-up, full-speed motor with no control, no gas coverage, or one-gun-only failure.
Primary guide: MigSonic145 guide
Bench sheet: MigSonic145 bench test
Brand references: WeldKing local reference manifest, WeldKing fault-branch matrix

Intake snapshot

Item	Record
Serial or shop tag
Exact complaint
Wire type and size as found
Gas-shielded or gasless setup
Base gun or spool gun in use
Startup behavior
Feed-speed response on first trigger

Likely parts and accessories to stage

Item	Why stage it early
Known-good NT-1 gun and consumables	fastest way to remove gun-side false faults
Known-good clamp and lead set	return-path issues remain common
Regulator and gas hose baseline	needed when the complaint is shielding related
Spool gun only if the complaint is branch-specific	keeps optional package faults separate

Official parts-entry shortcuts

Use these after the bench evidence proves the complaint follows an external gun, spool-gun, or gas-side branch.
Broad parts path: official MigSonic145 parts category
NT-1 MIG gun 07000422: official product page
SpoolKing-200 spool gun 07NS2000: official product page
Gas-side branch 07000510 and 072611120: official category page

First branch decisions

If you see...	Stay in this branch first
Clicks on and off at startup	capacitor-board or support-power branch
Full-speed motor with no control	control PCB branch
Poor shielding only	gas regulator and hose branch
Complaint follows one gun only	gun or spool-gun branch

Local files to open first

assets/reference_doc/WeldKing/MigSonic145/MigSonic145_service_manual.pdf
assets/reference_doc/WeldKing/MigSonic145/MS145_MIN_OUTPUT.doc
workbook sheet MigSonic145 in assets/reference_doc/all_models/troubleshoot_notes.xlsx

Bench workflow

Capture startup and wire-speed behavior before opening the case.
Run MigSonic145 bench test.
Prove one healthy base MIG process first with the base gun.
Retest the original branch only after startup and feed control are stable.

Release signoff

Check	Result
Stable startup restored	pass / fail
Base MIG baseline restored	pass / fail
Wire-speed control restored and idle feed stays normal	pass / fail
Gas-side branch restored if required	pass / fail
No click-cycling or runaway feed after power cycle	pass / fail
Covers, grounds, and lead routing restored	pass / fail

Technician: __________ Date: __________