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Re: out of focus
How old is the set? If picture is really very blurry, Try adjusting 'focus'. You can find this conttrol generally at the rear of the set.
Otherwise,. if you know solid state electronics, Check the Focus control on the FBT. It is also possible that the CTR Base is faulty. Replacing this helps.
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no it is not hopeless! if you want to do this procedure I can help you adjust the main screen focus inside the television on the FLYBACK TRANSFORMER but you will need to take it apart unless there are access holes in the back for the adjustment.
as your problem is
the picture has become blurry/hazy
1 it sounds me that there is a little sparking near high voltage section that is near flyback transformer.please get it check.
2 if it is ok then focusing anode wire going to crt base from flyback transformer is not making proper contact due to some foreign material deposited on it.
please call tech person if you ae not aware of it as tv is a very high voltage device.
The writing is more blurry than the picture.
it is not that serious
1 focus wire might be loose.
2 crt base loose.
3 dust like thing near focus wire.
4 adjust focus control fitted on eht.
it is high voltage portion do not touch unless you know about it.call tech to do it.
blurry picture is mainly due to focusing voltage is not proper.
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.
Each projection set has focus controls in back, usually they don't move or go out of focus unless someone moves it, but in your case if you open the back you will see a focus block with 6 knobs 3 are for screen,I would highly recommend that you don't move this. Look for the focus and you will have to set each with the one color. Cover the other two and adjust.
You didn't mention if you saw fine white diagonal lines running through the screen from top to bottom. If so, you likely have a shorted Picture Tube which is not usually fixable. If there are no lines seen running through the screen, then it is possible the High voltage transformer which also has a screen voltage and focus control built in that could be bad. I would expect the cost of that part to be about $100, so the repair cost total could approach that of a new set I would guess.
behind the front grill is a door with 4 t20 torque screws in it, remove that & to the left will be a screen/focus block, three knobs will be for tube intensity STAY AWAY FOM THOSE. the other three will be your focus for each tube