It was reported to philips by the customer (biomed) that the main power light is amber, indicating ac power, but every 30 seconds the power led turns green then beeps and goes back to amber.The customer stated the device will not power on with ac power only.The customer confirmed that the power supply has the 12 and 24 volts.The device was not in clinical use at the time of the event and there was no report of patient or user harm.A philips field service engineer (fse) was dispatched to the customer site.The fse tried to power the device on, checked voltages at power supply, unplugged from ac, and the device still would not power on.The fse then disconnected the battery and the reported issue was confirmed and traced the issue to a faulty power management pcba (printed circuit board assembly).The fse replaced the power management pcba and the device powered on and passed performance assurance testing.
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