Coffee Repair Wiki
A practical knowledge base for diagnosing and repairing espresso machines — built from real repair work, starting with Breville and expanding to any brand.
How to use this wiki
New to machine repair? Start with the Foundation section — brand-agnostic concepts that transfer to every machine you'll ever work on.
Looking for a specific model? Jump straight to Model Dossiers — each page covers component specs, diagnostic trees, common failures, and part numbers.
Skill Progression
| Level | Skills | Example Jobs |
|---|---|---|
| Beginner | Descaling, portafilter seals, steam wand cleaning, group head gasket | Breville Bambino service |
| Intermediate | Pump replacement, thermostat swap, solenoid cleaning/replacement, basic PCB inspection | BES870 no-pressure fault |
| Advanced | PID tuning, boiler rework, PCB component-level diagnosis, E61 group service | Dual boiler calibration, commercial overhaul |
Model Coverage
| Model | Type | Status |
|---|---|---|
| Breville BES870 | Single boiler + grinder | ✅ Complete |
| Breville BES800ES | Single boiler + grinder | 🔜 Coming soon |
| Breville BES920 | Dual boiler | 🔜 Coming soon |
⚠️ Part number warning: Part numbers in this wiki were generated with AI assistance. Always verify against Breville Parts AU, Espresso Parts AU, or iFixit before ordering.