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 > Power loss on 55' Mitsubishi Projection
Expert: cleggsan - 11/2/2009
Question
Hello today I turned my television on and everything was working fine, I have cable from Comcast connected to it, and as I turned it to High Def, the tv just turned off. I thought it just shorted out or something but every time I try to turn it on it acts like it is going to turn on, green light comes on but the screen does not. After about three seconds the power just turns off. I have tried unplugging every chord to the tv, and changing the power outlet. It continues to do the same thing. Any ideas on what this could be? Do you think I could fix it by myself? Please help thank You!!
Answer
No, I doubt if you can repair it by yourself.
The problem is most likely a loss of the power supply. It requires some tests and measurements by an experienced tech to determine the exact cause - and cure.
Most frequently it will be a couple of electrolytic capacitors that have lost their impedance and shorted down the power supply.
However, it can, sometimes, rarely be due to a cold solder joint or loose connection. You can test for this by banging on the set with your hand or fist. This will sometimes wake up the bad connection and get the set going again. So, try it and see if it works. Otherwise, you are at the mercy of a tech to come out and check into it.
Hope this helps.
Add to this Answer Ask a Question
|
|
