Re: sony projection tv picture real bright and not clear
This sounds like your flyback on the D-Board of your tv is going out (The part is around $70.00) and available at www.Sears.com the parts dept have make and model ready ( This is a very common problem with this model of sony tvs) Have a pro do it HIGH VOLTAGE! Please rate in order to keep this site free
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You have a weak capacitors in the power supply. Your description has enabled me to say this is the solution. We TV techs call this "breathing". You may control some of this with raising the contrast and brightness to see the picture stabilize.You will need a TV tech to correct the power supply. I have not worked on projection TVs for some time. This is a classic problem with a classic fix. Thanks for asking and show all hands of support!
the picture tube is gone.
i repaired 150 sony xbr and kv series with that problem.sony has a single gun not three and has a great pix,but burn out faster.
there is a main screen control that you can adjust ,but the tube is gone.
on the back of the crt there is 3 gun drives r g b .
turn the color all the way down so it is black and white.
if there is a green ore purple tint,one gun is out of balance.
ajdusting the r g b controls so that black and white is normal is what you want to do.
the crt board has the screen bias voltage 800volts on it so be very careful and use an insulated screwdriver to adjust the drive controls.
This sudden changes in brightness are caused by the change in voltage inside the tv,not in the outlet in the wall but inside the set,The changes are an indication something is going wrong and it needs to be corrected,the set does have a brightness limiter but it only works when the set wants to get brighter than normal,You need the assitance of a servicer to correct this problem.