answered
Make sure your set -top box is connected and " ON ", or the Source ( like a DVD player ) are connected accordingly to the TV audio and video input and it is  " ON  "  likewise. Have your TV unplugged for a while ( like 30 minutes to one hour ) and put it back to … Read more
answered question
They are just possibilities , or a guide, a clue the true causes can be diagnosed with the aid of service manual , actual visual and voltage measurement inside the unit, if you feel and you're  qualified for troubleshooting and repair have one or let the professionals do it for you.
answered question
If it really needs replacement have the professionals do it for you, it needs alignment , and you will be taking out the anode cap from the old CRT to the new one. If you can see arcking inside the CRT tube then most probably it needs replacement, it could be bluest white in color, … Read more
answered question
First check if sound is available while having no picture or raster , if there is sound then check for CRT heaters, if it lit , check video drive and Screen voltage if it don't check it from the flyback secondary terminals it supplies the voltage necessary for the heater to operate. If it does … Read more
answered question
Sony TV have service manual on line, you need to have one to repair the unit you are having some have a fee but some are also free. These manual will guide you , troubleshooting the unit in component level., might as well have a copy of it and send it to your Sony Technician … Read more
answered question
Sometimes it happens, but what actually is the problem you are having, can you elaborate it a little bit and the things  you have done to remedy the problem, might as well the model and chassis the  unit you are having. Have a service manual if you wish to do it yourself and it will guide you … Read more
answered question
If it can't be aligned  using the remote, you need to trace  Convergence Circuits it can be from the resistors to the Convergence IC itself And don't  sacrifice yourself buying cheap parts if you wish to do it yourself, you will also need to replace the heatsink compound after replacing the Convergence IC.