Repair Diagnostics Checklist
Step-by-step diagnostic checklist for mining rigs at 0.05 PH/s and above—fan alarms, hash-board errors, and PSU drift before you call for an on-site assessment.
Use this page before requesting an on-site rig assessment or ordering spare parts. Clear symptoms shorten visit time and improve parts matrix accuracy.
Before you open anything
- Export 24-hour hash-rate and temperature logs from your monitoring stack.
- Note ambient humidity for the past week—coastal sites often misdiagnose humidity as board failure.
- Photograph serial stickers on PSU, control board, and each hash board.
- List prior repair attempts (which screws, which parts, which technician).
Fan alarm flow
| Step | Action | If positive |
|---|---|---|
| 1 | Listen for grinding or uneven RPM | Replace fan module before board swap |
| 2 | Check filter and duct obstruction | Clean; retest 2 hours |
| 3 | Compare RPM between identical units | Mismatched fan SKU likely |
| 4 | Inspect gasket around PSU intake | Order gasket kit by revision |
Hash-board error flow
| Step | Action | If positive |
|---|---|---|
| 1 | Swap board to known-good slot | Slot issue (connector/cable) |
| 2 | Reseat with correct torque | Intermittent contact |
| 3 | Compare board revision sticker | Wrong spare revision ordered |
| 4 | Check VRM pad contact visually | Pad damage—stop and document |
PSU drift
Rising power draw without hash gain often precedes PSU failure. Measure inlet current on one unit versus fleet average. If >8% deviation, schedule PSU inspection before board swaps.
What to send us
Email or contact form with:
- Total fleet hash rate (confirm ≥ 0.05 PH/s)
- Model list and quantity
- Photos of errors on screen and physical labels
- Preferred visit window
Service area
Primary coverage: Ulsan, Busan, Gyeongju, Daegu corridors. Remote parts reviews accept photos from anywhere in South Korea. Sites beyond 200 km from Ulsan incur travel fees listed on our rates page.