Question about Hitachi 57S715 57" Rear Projection HDTV

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Tv power will not come on tried un pluging and pluging in diffrent outlet still will not work

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Re: Tv power will not come on tried un pluging and...

This looks like the solution to my problem. I just want to know how much these parts that we are talking about? And where is the best place to buy parts?

Posted on Jul 26, 2007

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Re: Tv power will not come on tried un pluging and...

You did not say if any lights are lighting up on the unit. If the red LED is lighted or blinking your power supply, and fuses, are probably OK. If the LED is blinking it means that you probably have a problem in the high voltage circuit. Usually the Horizontal Output Transistor is shorted. Could be caused by a power surge, lightning strike or shorted flyback. If you know TV safety, how to use a DMM, soldering techniques and are good with tools you might be able to fix this. Unplug and open the unit by removing the back. The HOT is near the flyback (a large round cylinder with a large red wire coming out of it) usually on the right side, mounted to a large piece of aluminum (used as a heat sink). Using a DMM check the HOT. If shorted this is your problem. Replace the HOT and the flyback. Check all resistors and diodes in the circuit for problems and replace any out of specification. This may solve your problem. If not the HV Block could be shorted also. This is part of the same circuit and is where the wire from the flyback goes. If after replacing all these parts the unit still is not working you will proabably need a repair tech to look at it. If you do not feel confident doing any of the repairs listed above seek the help of a reputable repair shop. This repair should not be very expensive in relation to the cost of the set. Good luck.

Posted on Jul 24, 2006

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