A refurbished EKG machine is only as good as the testing behind it. When a Dallas clinic buys one, the questions that matter are simple: does every lead read correctly, does the printout match the standard, is it electrically safe, and will it still work on a busy Monday six months from now? This page walks through the checks our engineers complete on every refurbished EKG before it leaves our Garland headquarters, so you know what to expect and what to ask any seller.
The machines themselves are part of our range of new and refurbished medical equipment for sale. If you are still choosing a model, start with our Texas EKG buying guide; this page picks up once you have a unit in mind.
The pre-delivery checks, one by one
1. Physical condition and the cart
What we check: the case, screen, keyboard or touchscreen, cable connectors, cart wheels and brakes, and the mounting hardware.
Why it matters: a cracked connector or a loose cart arm is the kind of fault that turns into an intermittent tracing later. Wear parts are replaced before delivery rather than noted on a report.
2. Power, battery and startup
What we check: the power supply, a clean startup with no stored error messages, the date and time, and battery run time on a full charge.
Why it matters: batteries are the most common reason a used EKG fails in the first months. If a battery no longer holds a useful charge, it is replaced, and we tell you the replacement date.
3. Patient cable and lead wires
What we check: continuity of every conductor in the patient cable and each lead wire, the clips or snaps, and strain relief at both ends.
Why it matters: a single broken conductor can make one lead look like poor electrode contact. Our EKG troubleshooting guide shows how often "machine" problems turn out to be the cable.
4. Simulator test of all 12 leads
What we check: we connect a patient simulator and confirm that every lead shows the expected waveform and polarity, that the heart rate reads correctly, and that lead-off alerts appear when a lead is disconnected.
Why it matters: a lead that is swapped or missing inside the machine produces a tracing that looks plausible but is wrong.
5. Calibration and print settings
What we check: the standard calibration pulse (10 mm/mV) and paper speed (25 mm/s), the printed grid, and the filter settings. Settings are returned to diagnostic defaults so the machine does not arrive with a previous owner's 40 Hz filter left switched on.
Why it matters: a wrong gain or speed changes every measurement read from the strip, and filter settings can change ST segments.
6. Printer and paper
What we check: print darkness, paper feed, the paper sensor, and the thermal print head across the full width.
Why it matters: faint or streaked printouts are hard to read and hard to scan into a chart.
7. Software and options
What we check: the software version and which options are enabled, such as interpretation or connectivity.
Why it matters: options are often licensed separately. You should know before delivery whether the unit prints an interpretation and how it exports results.
8. Electrical safety test
What we check: protective earth and leakage current measurements using a safety analyzer, following the method in IEC 62353 for testing medical electrical equipment after repair and in service.
Why it matters: an EKG connects directly to the patient's skin. Leakage results belong in your equipment file from day one.
9. Stored data
What we check: the stored-ECG directory and patient list. Before you sign for the machine, check that the directory is empty and that no previous facility's name prints in the header.
What arrives with the machine
- The test record with results from the checks above
- A list of included accessories (patient cable, lead wires, power supply, cart if ordered) and a starter supply of paper
- The software version and enabled options in writing
- Our 90-day warranty on reconditioned equipment
Delivery and setup across Dallas–Fort Worth
For in-stock units, delivery and setup can usually be scheduled the same day across Dallas–Fort Worth. On setup day, an engineer places the machine, enters your facility name in the header, sets the date and time, confirms the export method you use, and runs a test recording with your staff watching. It takes about the length of a normal patient visit. You can also see a unit in person at our Garland headquarters by appointment before you decide.
Not sure which features to look for? Our ECG feature guide for Dallas practices compares options by practice type.
After the sale
Once the machine is in service, we can add it to a preventive maintenance schedule so calibration and safety tests stay current. Service requests receive a response in under 8 business hours, Monday through Friday, with same-day on-site support across Dallas–Fort Worth through our Dallas medical equipment repair team.
To check current EKG stock or book a viewing, call (469) 767-8853 or send us a request.
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