Question about Sony Televison & Video
Try to reset the unit. Unplug it to the outlet. While unplug, press the power on button for 1 minute to drain the unit and refresh itself. After that plug it now to the outlet then power it on again and check if the symptom is still there.
If yes, this is an indication of out-of regulation in the power supply section or to its load. The power supply cycles on abnormal output voltages that caused with its parts malfunction or because of overload in its load.
Power supply malfunction was commonly caused by bad filter electrolytic capacitor, open fusible resistor, shorted transistor.
Load malfunction was commonly caused by shorted pre-amplifier IC, or shorted main output IC.
This symptom is quite technical and I would advice you to look for an experienced technician to isolate the trouble. Don't attempt to work in the power supply section if you don't have necessary tools and test instrument and don't know safety precaution of handling it. There some stored electricity that may hurt you with just a little mistake only.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.
Posted on Apr 05, 2011
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Posted on Jan 02, 2017
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