A Sneaky Industrial Enemy: Cold Solder
If your machine runs flawlessly for hours and then suddenly throws random errors, the root cause is highly likely Cold Solder or Oxidation on the electronic boards. These are microscopic cracks that are very hard to see.
Why Do These Cracks Occur?
- Thermal Cycling: Machines heat up and cool down. Components expand and contract. Over time, the solders on the circuit pins crack at the micron level. When it heats up, contact is lost, and the machine faults.
- Vibration: Shocks from heavy presses rip the solders of heavy components (capacitors, transformers) from the base.
- Moisture and Oxidation: Chemical vapors coat the circuit tracks with a green oxide layer, killing conductivity.
Microscopic Solution: SMD Revision
Intervening with a standard soldering iron can burn the tracks. In the Code Elektronik Lab, boards with intermittent errors are examined under microscopes, reflowed with infrared heaters, and armored with conformal coating against moisture/vibration.