Question about Televison & Video
Fot flashing light on toshiba tv .--check following.:
From the main power supply,
check diode, capacitor after the chopper secondary windings, the positive of the diode is the B+
if good, check these:
If the supply rail B+ is only about 45V or still lower
solution : replace the horizontal deflection flyback transformer maybe partially shorted
maybe no voltage at all
solution : check horizontal output transistor might be defective, replace if found shorted
maybe there is a good supply say at least 110V , but no oscillator drive on the horizontal output transistor, or blocked oscillator signal drive
thanks.please do accept the solution.keep updated.
Posted on Sep 11, 2009
Your projection tv has an auto protect mode and it shuts off whenever it detected a hardware problem and thus gives you the led light flashing. It shuts off to protect itself from further damage.
There are several causes like a blown or faulty bulb, the power supply needs replacement or some leaking or bulging capacitors. But be very careful and do not touch these as you might get hurt since those capacitors olds an electrical charge that might cause electric shock that would injure you.
If you are not technically skilled to do electrical stuffs, you should seek assistance to a skilled tv technician.
Should you have any further questions, please dont hesitate to ask.
Posted on Sep 11, 2009
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Posted on Jan 02, 2017
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