Question about Dometic Heating & Cooling
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Posted on Jan 02, 2017
SOURCE: Black Screen
Thinking about this one I really think the video had nothing to do with the black screen. I would try to things one is reset the power management. Not know exactly what Powerbook you have I will give the most common way. Remove the Battery and the power cord from the powerbook, wait a few minutes then hold the power button for about 40 seconds. Then put the battery and power cord back in and restart it. The second thing to do is boot from the install disk that came with it and run the disk utility. I have also seen bad RAM do this but you would get at least a chime on startup.
Posted on May 05, 2008
SOURCE: elite 73952 will not start
sounds like it is the motor, open the door and press the door switch in ,have another person push the start button,and you tunr one of the drun fins. IF itstarts, you need a motor
Posted on Mar 12, 2009
Actually, the dealer is somewhat correct. In the hotter months of the summer, the rooftop units have a tendency to freeze up if not run on high cool due to the lack of air movement across the evaporator. If the unit fines on High/Cool, then run it in that mode but adjust the thermostat.
It should not however, cycle on and off that fast unless you have a bad freeze switch or the incoming AC is too low. If during that 8-10 seconds, the air begins to get cold and then it shuts off, then I would say you have a bad freeze switch. If it runs fine on high, but shuts off in low, I would say it is a lack of air movement.
Hope this helps,
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Posted on Jul 06, 2009
The 920nw did have a 3 year warranty on the unit but they will be out of warranty now. The flickering power light is an indication of a failure in the power supply board. When the board fails it can't start up correctly and the power shuts down over and over so you get the blinking light and no display. This is a very common failure point on all LCD monitors after a few years of use. There are parts called capacitors on the power supply board and they filter the output power. When they fail the power is not properly regulated and the power supply shuts down and tried to restart so you get the flashing. Here is a link to a repair guide that will show you how to dis-assemble the unit and then what to look for and replace to get it back up and running again.
The repair guide has pictures and videos to guide you through the repair.
I hope this helps, if so please rate my solution.
Posted on Jan 18, 2012
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