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Sharp Flat Screen lc- 42sb45u It seems that whatever it is that controls the power (off/on) in my tv is not working correctly. The tv will not turn on using the remote or power button on the tv. Sometimes it will turn on after hours and hours of waiting. Can you offer any advice? I've called Sharp and they located a sharp tv repairman about an hr away who could fix this issue.

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  • 56 Answers

Sounds like it could be a power supply problem - this is a common symptom for a failing capacitor. If you are handy with a soldering iron, you could replace yourself. Look for capacitor which has a bulging top located on the power board.

Posted on Oct 21, 2013

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SOURCE: remote control tv codes for sharp lc-32sb24u tv

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SOURCE: LC-65D64U Sharp Aquos

Call sharp back again and tell them you first want to register for aquos advantage program, which is free. By doing that your service will go much quicker with them. You then tell them that you want to get set up for service. They will have one of their authorized professionals come and fix your tv in a matter of days. If their tech cannot fix it, they will replace your tv free of charge as long as you are within your warranty.

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Posted on Oct 24, 2009

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SOURCE: I have a Sharp model

Voltages sometime increase/decrease during power outages. This mainly afftects the power supply of a lot of electronics equipment.
1. Check the fuse.
2. Check primary components like; Bridge rectifier, filter cap, switching components etc.
3. Check secondary (cold) side once you isolate the primary side to be ok.
Please consult a professional technician if you are not skilled in electronics repairing.

All the best
Rjn

Posted on Sep 20, 2011

  • 1 Answer

SOURCE: My Sharp LC-42SB45U takes 15 min to an hour to turn on. Also, sometimes picture blacks out for 10-15 seconds. Any suggestions? Pat Courson

Have same problem. Not the proper fix though I found that taking the back off and heating it up with a heat gun for 30 seconds to 1 minute and tv works fine till you shut it off over night.Maybe someone can offer a solution with that in mind. Pretty strange

Posted on Sep 23, 2012

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To long to come on


I would start with checking the capacitors. Replace any with bulged tops

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My Sharp LC-42SB45U takes 15 min to an hour to turn on. Also, sometimes picture blacks out for 10-15 seconds. Any suggestions? Pat Courson


Have same problem. Not the proper fix though I found that taking the back off and heating it up with a heat gun for 30 seconds to 1 minute and tv works fine till you shut it off over night.Maybe someone can offer a solution with that in mind. Pretty strange

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I have a Sharp model LC-42sb45u that will not turn on since power outage.


Voltages sometime increase/decrease during power outages. This mainly afftects the power supply of a lot of electronics equipment.
1. Check the fuse.
2. Check primary components like; Bridge rectifier, filter cap, switching components etc.
3. Check secondary (cold) side once you isolate the primary side to be ok.
Please consult a professional technician if you are not skilled in electronics repairing.

All the best
Rjn

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