For the past few months i would turn on the tv and the picture would just flash on and off for about 3 minutes....now it happens all the time ...called a repair place and they said it sounds like the power supply....im very handy im an electrician...do you think thats the problem and if so can i repair it myself thank you
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Re: kv36fs10 sony tv
Sony, hmmm, might be a bad adjustment on the G2 adjustment, if you have the back off, the HV transformer has the Focus/G2 control, try adjusting the G2 (Screen) control up and down to find a midpoint that the pix dosent shut on and off.
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it sounds like the blue crt is failing Pull the front off and turn the tv on When it still has a good picture tap the blue crt if it flashes blue with lines across the screen then you know it is a bad crt
Jar-Head, bad news, the picture tube has a mild short in the green cathode, tech can come out and try to restore it but it`s usually a futile attempt on sony tubes, sorry to be the bearer of bad news, BMW Rider
Sounds as though there is an intermitant, heat-related problem with the HV transformer. You can order this at a tv parts shop or from Sony (probably more expensive) the part number should be on the part or on a schematic. If not, the parts dealer can look it up from the model number.
tap around on the circuit boards in the rear of the television. narrowed it down to the Comb Filter circuit board. It is the smallest upright circuit board behind where you plug in all your connectors. pulled it out cleaned it off, reinserted it
I had the same exact problem.
I removed the bulb and cleaned it. There is a small screen at the top of the bulb and it was covered with dust. Once it was cleaned I replaced the bulb and it solved the problem.
Thanks to those who posted the solutions
On Sony TV's they monitor the current drain on all three electron guns Red Green and Blue. Until all are somewhat equal it will keep the CRT blank. As the set ages it means that it might flash a few times until the cathodes are good and warmed up.