Defective Secondhand Philips Respironics Everflo Oxygen Concentrator Mainboard

Objective AI Report

Disclaimer: I am Medbidding AI. I am an unbiased AI robot. I have generated the following report automatically (without human intervention). The report was prepared by examining only the product images in the ad in detail. The report may contain errors. Medbidding and other parties disclaim any liability that may arise from this report or reliance on its contents. If you have any questions or notice an error in the report, please contact Medbidding engineers.

Report date: 28.01.2026

Respiratory Device (CPAP/BiPAP) Electronic Mainboard Analysis Report

Device Identification

The product shown in the images is a green Printed Circuit Board (PCB) designed for a medical device, featuring various electronic and mechanical components. The specific components on the board (especially the dual-input differential pressure sensor and power inputs) indicate that this mainboard belongs to a respiratory therapy device (CPAP or BiPAP).

Brand and Model

The product in the images does not directly and clearly display the device’s final commercial brand (e.g., Philips, ResMed, etc.). However, the label information identifying the product’s technical identity is as follows:

• Barcoded Label Information: On the front side of the board, there is the code (S)T1F00AR3, and immediately below it, the part number 1067230 Rev0.
• PCB Manufacturer Information: On the back side of the board, the inscription PCB 1039408 REV 2 is present. Additionally, on the left edge, KALEX K558 and the flammability standard code 94V-0 are visible.
• Note: The part number format and the “Rev0” inscription on the board are industrial tracking codes, but a model name intended for the end-consumer is not visible in the images.

Areas of Use

This electronic board serves as the main control unit for devices used in sleep apnea treatment or respiratory support (CPAP, BiPAP, or Ventilator). It is understood to perform the following functions:

• Managing the device’s motor and sensors.
• Measuring air pressure and flow (via the pressure sensor on it).
• Providing power distribution to the device.
• Performing data logging or communication functions (the metallic slot on the left side is likely for an SD card or data card reader).

The product is suitable for use as a spare part in the repair of a faulty respiratory device.

Originality

The soldering quality, component placement, label neatness, and prints compliant with industrial standards (such as UL 94V-0 flammability codes) on the board indicate that the product is not a makeshift production but a professionally manufactured product, meaning an Original Equipment Manufacturer (OEM) part.

Technical Component Analysis

The visual analysis of the main components on the board is as follows:

• Pressure Sensor: In the upper right section, there is a plastic-bodied sensor module with two black hose barb inputs. This component is vital for measuring air flow and pressure.
• Power Switch: In the lower right section, there is a black ‘Rocker’ type on/off switch with “O” and “|” symbols.
• Fuse: Immediately to the left of the switch, there is a glass tube fuse (labeled F1) mounted on metal legs.
• Power Supply Components: In the upper left corner, there is a large transformer (or coil) with yellow tape, and next to it, a large electrolytic capacitor. This section is for voltage regulation and the power input stage.
• Memory Battery/Supercapacitor: In the middle-right section of the board, there is a purple button-type component (likely a supercapacitor) with “5.5V” visible. This part ensures that the clock or settings are retained in memory during a power outage.
• Metal Slot: The silver-colored metal box on the left edge serves as a slot for an SD card or similar data storage unit.
• Connectors: White multi-pin sockets and metal connection jumpers are located on the upper right and right edges of the board.

Physical Deformation and General Condition

The product’s physical condition visually appears “Clean” and in “Good” condition.

• Casing/Board Surface: No burn marks, cracks, breaks, or deep scratches have been detected on the green PCB surface (mask). The surface is shiny and clean.
• Corrosion: No visible corrosion, rust, or signs of liquid contact (oxidation) are present on component leads or solder points.
• Component Condition: No swelling, bulging at the top, or leakage from the bottom of capacitors (especially the large cylindrical one) has been observed.

Potential Failure Risk

In the images, there is no evidence indicating an immediate failure (burnt part, burst capacitor, broken trace). However, in electronic boards of this type (second-hand or spare parts), it is common for supercapacitors (the purple round component) to lose their charge retention capacity over time. Other than this, the product’s condition appears suitable for reuse.

Quantity Information

In the images, there is 1 unit of the electronic mainboard. External accessories such as boxes, cables, or screws are not visible in the image.

Label Information List

• Main Label (Barcoded): (S)T1F00AR3
• Part Number (P/N): 1067230 Rev0
• PCB Production Code: PCB 1039408 REV 2 (Back side)
• Material Code: KALEX K558 94V-0 (PCB material)

Year of Manufacture

While a clear date cannot be read from the integrated circuits or components on the board, it can be stated that such technologies and design architecture reflect medical device standards from post-2010. The exact production date is not specified as day/month/year on the labels.

Mechanical and Electronic Components

The entire device is an electronic component. Mechanically, only the on/off switch and the fuse holder are movable or interactable parts, and these appear to be intact. The hose barb inputs of the pressure sensor are not broken and retain their form, indicating that mechanical assembly can be performed without issues.

Accessories

No external cables, mounting screws, or power adapters are attached to the board in the image. The product is seen only as a “Mainboard”. The buyer will need to use the device’s original casing screws and connection cables during assembly.