Question about Televison & Video
Power supply or microprocessor in the set---have you tried to unplug set and or box if used from power for a while and then power back?
Do I understand it is a new set?
Posted on Dec 10, 2012
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Posted on Jan 02, 2017
your backlight burnt out, this will be a maybe several hundred dollar repair. the screen is backilt by a very expensive flourescent light, without that light, the screen will be black.
Posted on Nov 28, 2008
SOURCE: My Toshiba flat screen won't
Can you turn the TV usin g the power switch on the TV?
Testing remote control:
The remote control puts out IR (InfraRed) signal that human eyes cannot see, to find out if the remote is sending out the signal or not you just point the remote at the digital camera's Lens (Digital Camera can detect IR), you should see flashing light on the camera's screen when any one of the remote button is pushed. If you do see the flashing on the camera, then the problem is in the TV IR receiver or the main logic board; more troubleshooting with scope will be needed to look at the signals.
Posted on Jul 01, 2011
Testimonial: "thank you for the advice. I checked the remote as you suggested and it's working but won't turn the tv on and off...."
The symptom you describe is consistent with an overload(short) on one of the power supply output voltages.
If you hear a clicking noise,that is one of the relays ,showing that the TV power supply try to start normally,but then a short condition is detected and power supply shuts off,and all repeats again.
Now from my experience with these units,the most common cause is the power board itself or the Y sustain board.To make the exact determination,further diagnose inside of tv set is necessary(voltages and resistances readings)-a common occurance would be some defective-bulged top capacitors in this power supply you will have to replace the board.
Depending on the models,these boards cost about-$250 to $300 each.Add another $150 for labor and the repair cost will be around-$400-$450.
Posted on Jul 15, 2011
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