AllExperts > TV/VCR/Stereo Troubleshooting 
Search      
TV/VCR/Stereo Troubleshooting
Volunteer
Answers to thousands of questions
 Home · More TV/VCR/Stereo Troubleshooting Questions · Answer Library  · Encyclopedia ·
More TV/VCR/Stereo Troubleshooting Answers
Question Library

Ask a question about TV/VCR/Stereo Troubleshooting
Volunteer
Experts of the Month
Expert Login

Awards

About Us
Tell friends
Link to Us
Disclaimer

 
 
 
 
About cleggsan
Expertise
Consumer Electronics of all kinds. Audio, esoteric audio systems and components, video, tv. Digital equipment for consumer use. Ham radio and automotive electronics. Note: I give advice on tv repair based on general consumer electronics engineering experience but I am not engaged in actual repair of sets. MAKE SURE YOU GIVE THE MAKE AND MODEL NUMBER AND AGE OF THE SET.

Experience
Electrical Engineering; recording, broadcasting, design, international standards, tv and radio theory and practice.

Organizations
FELLOW of AES (Audio Engineering Society)
Senior Life Member of IEEE (Institute of Electronic and Electrical Engineers)
International Consulting Organization


Publications
IEEE Spectrum
Various Consumer Electronic publications

Education/Credentials
BSEE
MSCS
MBA

Awards and Honors
Famous Engineer for Digital Audio


 
   

You are here:  Experts > Home/Garden > Home Appliances > TV/VCR/Stereo Troubleshooting > Sharp lc46sb54u lcd tv

TV/VCR/Stereo Troubleshooting - Sharp lc46sb54u lcd tv


Expert: cleggsan - 7/4/2009

Question
TV shuts off intermittently and will not respond to remote or buttons on tv. Power light comes back on, and the tv will show the last channel window but otherwise black screen. It requires unplugging for several minutes to reset, then works ok until it happens again, maybe a day, or week or month later. No storms or malfunctions of other electrical items in house.

Answer
It is most certainly an errant power supply or some subsection of the main power supply.  It generally requires replacement of a rectifier, zener or some part of the regulating system.  Cost of repair is likely to be in the range of $200 if you can lug it in to the shop; more if they must come to your residence.

Hope this helps.
C  

Add to this Answer   Ask a Question


 
User Agreement | Privacy Policy | Kids' Privacy Policy | Help
Copyright  © 2008 About, Inc. AllExperts, AllExperts.com, and About.com are registered trademarks of About, Inc. All rights reserved.