My tv just stopped turning on. it seems like a braker cause if i unplug it then plug it back in it trys to start up
This is one of the typical signs of a tired power supply; this is probably not and expensive repair since this behavior is often caused by a cheap part (capacitor).
If you are feeling adventurous, you can probably find (at least) the area where the failing part is located.
You would need a can of 'freeze spray' from an electronic supply store and a hair dryer.
When capacitors have lost value or gained too many losses, these can be influenced by raising or lowering their temperature.
NOTE: Once you remove the back panel and turn of the power, there will be dangerous voltages exposed so keep fingers clear of any parts.
Look for an area of larger capacitors (cylindrical parts mounted 90 degrees to the board) and a medium large transformer. Not the largest black object, this will be the flyback transformer that produces the high voltage for the tube and the signal that moves the trace back and forth across the screen.
With the power turned on, try shooting the smaller capacitors near that medium-sized transformer.
Try spraying them one at a time and waiting 10-15 seconds for the part to 'soak' up the cold; the big ones take longer of course.
If this turns up no part you can influence, then try with the hair dryer, again allowing time for reaction and try to aim at only a few parts at a time. Obviously, this is not going to be as directed as was the freeze spray.
If you locate a general area you can influence by alternate cycles of cold and heat, you are pretty close to the failing part.
If you want to proceed comment back and I will guide you further-
Dec 25, 2009 |
Sony KV-36FS100 36" TV