I have sound and picture, but picture is blurry (out of focus) as soon as you turn on tv.

Check the filter capacitor to the supply to video output card. You can locate this capacitor at the CRT base card to your Sony Trinitron. Replace this electrolytic capacitor.

Remove front bottm panel and behind it should be the Focus/Screen control block replace it.
Mats 1-800-628-1118

I know these models came out around 2001, and I'm afraid that the problem sounds like it is related to the bulb going bad.

This article outlines how many TVs from around the turn of the century have had similar problems to yours.

I know bulb replacement is an option. You may want to call around to TV repair shops and see what your options are. In the end, though, it may be time to start saving up for a new TV.

sounds like a bad light engine, sorry

its the convergence problem in your tv.the ic needs replacement.to fix the problem.its worth getting it fixed.get it repaired.
the cost will be negligible.

i got a zenith tv and the picture is really blurry how do i focus it ?

focus block or neck boards on thr picture tubes

The writing is more blurry than the picture. it is not that serious while shifting 1 focus wire might be loose. 2 crt base loose. 3 dust like thing near focus wire. 4 adjust focus control fitted on eht. caution it is high voltage portion do not touch unless you know about it.call tech to do it. good luck.

blurry picture is mainly due to focusing voltage is not proper. solution 1 check & adjust focus control on flyback. 2 check crt base for loose. 3 wire going to focus control on crt base got disconnected due to foreign materials deposit on it. 4 if tv is old possibility of crt getting weak.

It sounds like you may have a G1 intermittent short in the picture tube, which unless it is still in warranty would not be worth repairing.