caso de reparación
TIG No High-Frequency Start
Utiliza esta página cuando a TIG soldadora has salida de soldadura o gas response but the alta frecuencia arc-start circuit does not fire.
Comprobaciones by síntoma
| Condition | Likely section | Comprobación |
|---|---|---|
| No gas, no HF | Torch trigger o control lógica | Trigger connector, 2T/4T lógica, control supply |
| Gas works, no HF | HF placa habilitación o HF placa supply | HF relé/driver y placa voltage |
| Weak ticking only | Spark gap o HV transformador | Gap spacing, carbon seguimiento, transformador salida |
| HF exists but arc does not start | Torch, ground, coupling path | Tungsten, clamp, cable y coupling capacitor |
Common fallas
- Dirty o misadjusted chispero.
- Failed HF relé o driver transistor.
- Cracked coupling capacitor.
- Carbon seguimiento on the HF placa.
- Broken torch switch o ground clamp issue.