Use a nozzle 5mm larger than the component. For a 35mm BGA, use a 40mm nozzle. The Xemu Complex 4627 hot requires high airflow (40 liters per minute) to force heat into the interstitial spaces.
Close heavy browsers or rendering tools while xemu is running. 2. Optimizing Frame Rates
Here is the story of how this specific file became the "gold standard" for retro gaming enthusiasts. The Problem: DRM and Dead Ends
| Symptom | Probable Cause | Solution | | :--- | :--- | :--- | | | Ramp rate too high (>5°C/sec) or top nozzle too close. | Increase nozzle height to 10mm; lower air flow to 35 L/min. | | Component floats (tombstones) | Uneven heating; one side of part reaches liquidus 10 sec before other. | Add a second thermocouple to opposite edge; balance IR heater. | | Solder balls (satellites) | Soak zone too short; flux outgassing before paste melts. | Extend 150°C–200°C soak to 130 seconds. | | Non-wetting on cold side | Ground plane imbalance. | Turn off top convection and rely solely on bottom IR for preheat. |
Use a nozzle 5mm larger than the component. For a 35mm BGA, use a 40mm nozzle. The Xemu Complex 4627 hot requires high airflow (40 liters per minute) to force heat into the interstitial spaces.
Close heavy browsers or rendering tools while xemu is running. 2. Optimizing Frame Rates
Here is the story of how this specific file became the "gold standard" for retro gaming enthusiasts. The Problem: DRM and Dead Ends
| Symptom | Probable Cause | Solution | | :--- | :--- | :--- | | | Ramp rate too high (>5°C/sec) or top nozzle too close. | Increase nozzle height to 10mm; lower air flow to 35 L/min. | | Component floats (tombstones) | Uneven heating; one side of part reaches liquidus 10 sec before other. | Add a second thermocouple to opposite edge; balance IR heater. | | Solder balls (satellites) | Soak zone too short; flux outgassing before paste melts. | Extend 150°C–200°C soak to 130 seconds. | | Non-wetting on cold side | Ground plane imbalance. | Turn off top convection and rely solely on bottom IR for preheat. |
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