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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 > Mitsubishi 73 in locked buttons

TV/VCR/Stereo Troubleshooting - Mitsubishi 73 in locked buttons

Expert: cleggsan - 11/7/2009

Question
I have a Mitsubishi WS-73711. The TV doesn't respond to either the remote or the front panel controls. I reset the TV with the System Reset button as the manual suggests and also unplugged it overnite to see if that helps.The panel controls and remote still do not work. Can you help? Thanks, Bob

Answer
When you say "doesn't respond" do you mean the set does not come ON or are there other features that do not function correctly? If it is not powering up you may assume the problem is related to power supply failure.

Testing is necessary to determine the cause as there are three power supplies and all three of them have sophisticated circuitry. The main power supply furnished the voltage drive for all the electronic circuitry. The high voltage supply feeds the three projection tubes that provide the video to the screen. The remote power supply stays on whenever the power cord is plugged in so it can respond to the signals coming from the remote control. Anyone of these supplies could be at the source of the problem.

This is a 7 year old model and should have several years of life left. Mitsubishi sets are good sets and I know of no issues with this model. It may cost $200 to $400 to get it repaired but it should be a good investment and if you like the set and its picture quality you should get it repaired. Normal life span of big screen RPTVs is 12 to 18 years.

Hope this helps.

PS: Here is one customers experience with a similar problem:

http://www.fixya.com/support/t341489-power_up_leakage_test_mitsubishi_ws

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