I’m currently working on a project focused on diagnosing and reconstructing the control electronics of RS1 / RS Welding Systems Leipzig (WIG-STEUERUNG) welders.
I’m looking for the schematic diagram or any technical documentation of the main control board labeled 906383 / 906384, used in RS1 TIG/MMA welding machines.
The board includes:
- two UBICOM TDS38070 microcontrollers,
- EEPROM 24C256,
- analog ICs such as LM358, TL062, MC33153, MAX4515,
- a gas valve control section (BD135 / IRF8G30 / optocouplers P621),
- connectors labeled Display, Netzteil,