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The unit is drawing too much power and is being protected by a current/temp sensitive device that shuts down to protect unit. When it cools, the power is restored until it heats up again, and the cycle continues.
Sounds like something in the power supply area is the cause of the anomaly.
There is 4 capacitors on the power board that need to be replaced. I have fixed 2 of these in the past now, with the same problem. They are green in color.
When you encounter about this issue this is overheating problem maybe the CPU fan is not spinning and faulty already, you need to check the CPU fan and replace a new one.
Computers may not be smarter than people, but if they’re designed
properly, they will shut themselves down before overheating to the
extent that they do themselves damage. If the smart person keeps
turning the notebook back on and figures out a way to foil the
protection, the laptop is probably doomed.
Once a laptop shuts down for
thermal event protection, it may refuse to power back up for a fixed
period of time, five or ten minutes, or it may begin to boot and shut
down immediately as soon as it boots to the point that it can figure
out that its too hot.
The over-temperature protection is generally a
BIOS rather than an operating system function, so one sign of an
overheated laptop is one that shuts itself down while you’re using it
and then refuses to boot as far as the operating system unless you
leave it alone for an hour or so to cool down.
Unless you’ve been
working in a very unfriendly environment, high temperatures, direct
sunlight, etc, you should take even a single overheating shutdown as a
warning to back up your data at the first opportunity and to give the
cooling system a serious cleaning.
If all the parts of your computers are fined functioning. This is a CPU problem witch is no display. Try to disassemble the CPU remove the heat sink the CPU and clean and insert it again. When you are now inserting the CPU be sure that you will put a thermal past in the heat sink so that the heat from the CPU are absorbed. If the heat will not be absorbed it will cause overheating.
It sounds like the fan motor is siezed up. I would start by trying to locate a new motor for the unit. As to the who, where, or how much, I have not a clue. I deal primarily with residential, commercial and light industrial type units however, the concepts transcend across most all a/c equipment out there. If the fan outside won't turn, the unit can't get rid of the heat that it is picking up from the inside where it is doing the cooling. The heat and pressure will build up rapidly and cause unusual sounds, sometimes smells and always high amp draws (dimming of lights) until the compressor shuts off on it's internal thermal protection. When the compressor cools, it will try again and the cycle continues. Hope this helps you out some, but my main job is troubleshooting equipment that is right in front of me. I do the best I can here. Thanks, Chillmaster
If the unit shuts down almost immediately without sound, you have an electronic failure of the audio amplifier.
However if you must play the unit up above quiet background levels, you likely have a shorted speaker wire. With home theater systems, you have the luxury of trying different surround modes and speaker level settings. It's not unusual, for example, to have a loose wire strand going to the center speaker. In stereo, the system works fine. As soon as you switch to a surround mode, the amplifier senses the short and shuts down to protect itself.
Check those wires really close - I bet you'll find it there.
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