Q&A with Steve Rooks from Southeastern Biomedical Associates

Steve-Rooks-engineer

Steve Rooks

Today, we would like to highlight some tips from Steve Rooks of Southeastern Biomedical Associates. Steve has over 10 years experience consisting of both field service and depot repairs, and is a specialist in working with GE cardiology and monitoring devices. Steve went over troubleshooting tips for the GE MAC 5000/5500 display. The team at Southeastern Biomedical is always eager to help out by sharing their knowledge and expertise so we cannot thank them enough for taking the time to share their expertise!

Troubleshooting Tip for the GE MAC 5000/5500 Display

One of the most common issues seen with the GE MAC 5000/5500/5500HD is the failure of the display. Beginning with the original model MAC 5000 with its blocky squared-off features to the newest model 5500HD with sleek rounded curves, there are still only two ribbon cables that connect to the main board from the display assembly. The first, and certainly the most common failure, is an orange/brown ribbon cable (#2034923-001 or -002) that connects to the inverter board and subsequently, the backlight (a long, narrow fluorescent bulb) providing illumination for the LCD panel. This ribbon flexes and folds every time a user opens or closes the display panel. Trace metal fatigue over time, improper securing of the ribbon or abuse can all be factors that shorten STeve2the lifespan of this part. Operators and technicians can observe the resulting failure as a display image that flickers from illuminated to dark or “on/off” if you will. Please note that this type of failure will not distort the image produced on the LCD, it will only toggle light to dark. It is a common misconception that purchasing a backlight ribbon cable will correct color wash, image distortions, lines or blocks of color. These issues can all be attributed to the LCD (white) ribbon cable or LCD panel. So remember, the backlight flex cable only provides the background light needed to illuminate the panel for viewing. With a little time and some simple troubleshooting tips, technicians can avoid costly display assembly replacements by narrowing down the cause to one faulty component. Thereby saving unit down time, department funds and increasing customer satisfaction.

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