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: 7/20/2008 Subject: RCA MODEL P46924
Question TV BLINKS ON AND OFF, PICTURE WAS PERFECT BEFORE, SOMETIMES GET A GLIMPSE OF THE PICTURE, IT LOOKS GOOD, ALSO HAS SOUND. PLEASE HELP
Answer Is the unit getting old (like over 6 or 7 years)?
ONE: If the set is getting old it could be one or more of the projection tubes going out. If so, very expensive to replace.
TWO: Could be high voltage block/generator and/or high voltage deflection amplifier.
THREE: Could be the convergence circuits going/gone bad.
Unfortunately, in order to know for sure it must be tested by a competent tech who knows how to take some voltage measurements in determining the exact one.
Repairs will be $200 and up. If projection tube is going out cost of replacement will be much, much more.
Let me know if you need more.
C
PS: There are some adjustments on the biasing of the projection tube(s) that could get you a little more life out of the set - if it is a weak projection tube at the cause, but you must know how to make the adjustments. If you just google the model number you will find some fixya and other comments that have a number of suggestions for this model. They may be worth you looking at and trying them.
