This covers up to one hour on "Standard" machines. Due to the complexity of modern Inverter type welders, those machines may need more time to evaluate as compared to older Transformer/Rectifier type models.Technician will check the Power Source (Welder) for circuit faults on primary and secondary modules to include primary input cord, transformers, switches, relays, SCRs, Diodes, IGBTs, MOSFETS, & Integrated Rectifiers and the High Frequency system on TIG machines. Wire Feeders, Spool Guns, MIG Torches, and TIG Torches are checked as well. TIG Coolers can be tested as well. ***(This charge is for T&E Labor oniy and does not include any Circuit Boards or any parts new or used!)