My 28" Sony Trinitron TV fell off to its face from about a feet's
height. It first landed on the top left edge of the case & subsequently
fell to its face.

Now, when I switch on the TV gives a flash once & then shows nothing. I
can see the channel number, AV1, AV2 etc. on the top left but in red
colour (it used to be shown in green). I can see the progress bar for
volume when I change the volume. But I can't see the picture. Audio is
perfect.

I think the picture tube is gone but I want to be sure about it. Is
there any way to confirm this myself without the help of a technician?

I opened the TV to see if there are any cracks on the CRT but there are
none.

Any information in this regards os much appreciated.

Thanks in advance.


I think you have two problems with this set.
The no picture fault might have been worth repairing,

But the colour purity problem you see on the on-screen graphics is almost
certainly caused by the trauma the set suffered buckling the aperture grille
inside the CRT.

The construction of the Trinitron aperture grille is lighter and more easily
damaged than other types of CRT.

--
Graham.



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