Aboutcleggsan Expertise Consumer Electronics of all kinds. Audio, esoteric audio systems and components, video, tv. Digital equipment for consumer use. Ham radio and automotive electronics.
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
Expert: cleggsan Date: 7/6/2008 Subject: Screen black but audio works
Question Toshiba 32a61 is 5 years old. Screen went black while wathing cable, sound works, cable menu is visible, and dvd player gets a picture just fine. Any ideas?
Answer Due to the age and the symptoms my suspicion would be the loss of high voltage due to failure of either the flyback transformer or the horizontal output amplifier - or both. This is quite common in older sets. The repair would cost at least $100 for a set this size.
Of course there are other possibilities, such as failure of the video processing circuits. One can only know with investigation by someone capable of taking voltage readings around the circuitry to hunt down the guilty parts.
