What We Test & Why It Matters

Proper diagnostics prevent guesswork and repeat failures. We check power & safety, electronics, mechanical wear, and performance before any repair is approved.

🔧 Book Diagnostics📞 Call 214-994-8121

• ✅ DFW drop-off + ship-in nationwide
• ✅ 90-day workmanship warranty on repairs performed
• ✅ Independent — not Festool-affiliated

TL;DR: A structured diagnostic separates a $15 cord issue from a board/bearing failure. If your tool still misbehaves after basic checks, book diagnostics for a clear plan (parts, labor, timeline) before any work begins.

What We Test (Checklist)

1) Power & Safety

• 🔌 Plug-It / power lead continuity & strain relief
• 🧲 Switch/trigger function & interlocks
• ⚡ Grounding & leakage (visual + meter checks)

2) Electronics & Controls

• 🧠 Speed module / board output behavior
• 📈 RPM consistency (sanders) across speed steps
• 🔄 Auto/Tool mode switching on CT units

3) Mechanical Wear

• 🧱 Bearings & shafts (noise/play/heat)
• 🛞 Pads, brakes, hubs (pad wear, brake glazing)
• 🧩 Seals, gaskets, hose ports (leaks that kill suction)

4) Performance / Flow

• 🌀 Airflow path (bag, filter, HEPA, seals)
• 📊 Load behavior (stalling, surging, vibration trends)

Common Symptoms & Likely Causes

• ❌ No power → cord/Plug-It, switch, fuse, module
• 🐝 Vibration / poor finish (sanders) → pad/brake wear, bearings, unbalanced pad, speed module
• 🛑 Won’t hold speed → speed control / board, brushes (if applicable), load sensing

• 🌬️ Weak suction (CT) → bag full, filter clogged, hose/port leaks, lid gasket, motor wear
• 🔁 Auto mode not switching (CT) → tool socket, board logic, debris in selector, contact wear

What You Get with Our Diagnostics

• 🧪 Bench testing & inspection report
• 📸 Photos/notes for worn parts or burn marks
• 💡 Clear repair plan: parts, labor, timeline — approval first
• 🛠️ 90-day workmanship warranty on the repairs we perform
• 📦 DFW drop-off & ship-in nationwide (RMA guidance provided)

Note: We’re independent and not affiliated with Festool. If your tool is still under manufacturer warranty, use the official process — we don’t service in-warranty tools.

When to Book Diagnostics (Skip More DIY):

• New bag/filter/pad didn’t solve it
• Grinding/screeching or ozone/burn smell
• Intermittent power or speed surging after cord checks
• CT suction loss persists after sealing obvious leaks

🧰 Book Festool Diagnostics

Helpful Links (By Model)

• RO 150 ROTEX Repair → open
• RO 125 ROTEX Repair → open
• DTS 400 / DTSC 400 Repair → open
• CT-36 Diagnostic Repair → open

FAQs

Are you a Festool-authorized center?

No. We’re independent and not affiliated with Festool. For in-warranty tools, use the manufacturer’s process. What’s included in the diagnostic?

Power/safety checks, electronics/control testing, mechanical inspection, and performance verification. You receive a clear plan — no work starts without approval. How long does repair usually take?

Diagnostics are quick; repair timelines depend on parts and scope. We provide an ETA with your approval. Do you warranty repairs?

Yes — 90-day workmanship warranty on the repairs we perform. Local or ship-in?

Both. DFW drop-off available; we also provide RMA/packing tips for ship-ins.