Question about Televison & Video
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Posted on Jan 02, 2017
SOURCE: My Daytek DT4040 lost power
This kind of symptoms is cause by faulty(leaky/dried) electrolytic
capacitor in the power supply section. In the first stage of symptoms
warm up will make itself stable and the unit will power up after a few
attempt of plugging and unplugging from the outlet but it will get
worst, time will come that the unit will not power up at all.
Leaky capacitor has a physical indication of fault like bulged/dome at the top and can be easily identify like in the sample picture below.
Leaky capacitor with dome at the top.
Dried capacitor has no physical indication of fault, you must have a capacitor checker to determine its condition, if not available you should replace all electrolytic capacitor in the power supply section. It will not cost you much because it is one of the cheapest parts on that board.
Click this LINK for more information regarding electrolytic capacitor.
Please let me know if you need further assistance.
thanks for using fixya..
Posted on Jul 22, 2011
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