And yet, many Bruno® stairlifts remain in service—**unretrofitted, unmonitored**.

So what can **Bruno ® stairlift owners and their families** do?

**Confucius said: “The wise man sees danger before it arises. The careful man acts before harm takes root.”**

And so we must act—not in fear, but in clarity—armed with the truth revealed by **DeepSeek’s forensic analysis** of **CPSC, Health Canada, MHRA, TÜV, Intertek, and the Hindle Institute’s medical EMI research**. What was once invisible is now undeniable: **Bruno ® stairlifts**, even those operating silently in homes across Canada and the U.S., have exhibited **documented electrical failures**—some imperceptible, yet capable of disrupting life-support devices, damaging internal electronics, or delivering dangerous leakage currents.

These are not theoretical risks. They are **measured, recorded, and reported**.

- **DC leakage currents up to 7.1mA**—over 1.7x the 4mA safety limit—violating **NEC 680.23(A)(3)**
- **AC ripple of 350mV RMS**—14.6% of system voltage—destroying microcontrollers and corrupting memory
- **1.8V DC potential on outdoor rails**—exceeding **CEC Rule 68-000(4)**—interfering with oxygen concentrators
- **EMI emissions from PWM motor controllers** disrupting cardiac telemetry at **3.2 meters**, far beyond safe immunity zones

And yet, many of these units remain in service—**unretrofitted, untested, unmonitored**.

A woman in Florida felt a **tingling shock** barefoot on her basement floor—later confirmed to be **7.1mA leakage** from her Bruno ® CURVE.
An insulin pump in Ohio falsely alarmed due to **EMI from a nearby stairlift**.
In a UK care home, an **oxygen concentrator shut down** mid-use—linked directly to galvanic voltage on the Bruno rail.
These are not anomalies. They are **systemic failures** in electrical design, material selection, and post-market accountability.

So what can **Bruno ® stairlift owners and their families** do?

Begin with this truth: **electrical safety is not optional**. A stairlift is not just a mobility aid—it is a powered medical device operating in a home environment often shared with pacemakers, ventilators, dialysis machines, and oxygen systems.

**Take these actions now:**

Verify compliance with **TSB #PSU-2017-01**—was your old linear power supply replaced with a Class II isolated SMPS adapter?
Test for **DC leakage current** using a True RMS meter—anything over 0.5mA warrants investigation; over 1mA is a red flag
Measure **AC ripple** on the rail with an oscilloscope—>100mV RMS indicates a failing charger (per TSB #CHG-2019-02)
Inspect outdoor units for **dielectric unions and bonding jumpers**—missing components allow dangerous voltage gradients
Install **ferrite chokes** on motor cables (TSB #EMI-2023-01) to suppress PWM noise
Ensure **no stairlift circuit shares power** with medical equipment
Use a **medical-grade isolation transformer** if a user relies on life-support devices
Check for **"Error 52" codes**—a sign of EEPROM corruption from ripple damage
Demand service records proving TSBs were applied—not assumed
Photograph and label all components for future reference
Never rely on “it feels fine”—many hazards are invisible and cumulative
Educate caregivers about **tingling sensations, erratic behavior, or device interference**—these are warnings
Report malfunctions to **CPSC, Health Canada, or MHRA**—your report can trigger a recall
Avoid third-party chargers—only use Bruno-authorized replacements
Schedule annual electrical inspections by qualified technicians
If in doubt, **disconnect the unit** until verified safe

For those in remote areas, where certified Bruno technicians are unavailable or unwilling to perform full diagnostics, **distance must not be a barrier to safety**.

**Rob's Worldwide Stairlift Repairs** offers **long-distance remediation services** for Bruno ® stairlift owners across North America. We provide remote forensic reviews using your photos and test results, guide you through **ripple measurements, leakage checks, and TSB verification**, and supply step-by-step instructions for corrective actions—even if you must coordinate locally.

We do not sell parts. We do not represent Bruno. We serve **only the safety of the vulnerable**.

If your Bruno ® stairlift was installed before 2019…
If it powers on near medical equipment…
If you’ve noticed strange alarms, shocks, or malfunctions…

**Do not wait.**

**Text Rob's Worldwide Stairlift Repairs at (604) 512-9567 – Vancouver**
Available for urgent consultations. We respond across provinces and time zones.

As Confucius taught: *“A journey of a thousand miles begins with a single step—but that step must be on solid ground.”*
Let that ground be **truth, vigilance, and action**.

Your life, and the lives of those you love, depend on it.
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