Hello,
The unit is stuck in an intermittent on/off cycle. When I plug in the power cord, the green "On" light activates without any command, flashes for a few seconds, then turns off. The red standby light comes on for a few seconds before the cycle repeats. During this time, I cannot turn off the unit manually; it will shut off automatically after about five minutes, and there is no picture. Occasionally, with repeated attempts to power it on, I eventually get a picture and sound, which function properly. When it does work, I measure several voltages, and they appear to be normal....