I took front bottom cover of tv and the problem has gone away and the pic no longer keeps diappearing so i think the tv was over heating and automatically cuuting off, so there can you please suggest how to over come the problem.
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Re: screen keeps turning blue with no sound or pic.
It certainly sounds like you have a component heat issue. Someone with knowledge of proper TV safety needs to do the following. Using a heat gun heat components until the problem appears. Using cold spray, available in any electronics store, cool individual components until the problem goes away. When the problem disappears the component which you just cooled is the problem and should be replaced. This will take patience and time as the heating and cooling process is not instantaneous. Also you should perform the heat/cool cycle on the suspect component several times to verify that it is bad. Keep in mind also that there could be more than one component causing the problem. Concentrate on power components first such as transistors and ICs then capacitors and resistors. You could even have a cold solder joint so don't overlook them. It may pay to inspect all solder joints first with a magnifier as you may find the problem and be able to avoid the heating/cooling of components. Patience and diligence is the key and remember safety. If you do not know the proper safety procedures get someone to perform the tests who does. Good luck.
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Lol sounds like you tripped the pic in pic option.. the blue screen would probably be the feed from dvd or one of the other input options . Good luck I did that years ago and it took me forever to get out off... and a case of beer later... I think it had something to do with the pvc button on the remote.... stands for preview channel. so you could watch one and keep an eye on the other
Sounds like the picture tubes are failing,common on sony. do you notice any thin horizontal lines? You mite get lucky and be able to adjust the voltages. Remove back cover and look inside to see which tubes are lighting up.The front panel below the screen will come off and behind it is a small access cover.remove it. there you will find the voltage controls (its a plastic square with 6 knobs). 2 knobs for each tube, 1 is focus the other is the voltage labeled "screen". they are marked so look closely. Green is always in the middle but sometimes they flip the controls for red and blue so pay attention to which you are controlling .slowly adjust screen voltages to see if you can get it to stay on. If you over do it those thin horizontal lines will pop up and the tv will shut off again. If you already have lines back off the voltage by turning knob to the left slowly until they diappear. If that seems to fix it but the problem but it comes back later, then the tubes are shot. good luck!
Sounds like the red picture tube is acting up, there is a voltage control in the front of the tv ..you have to remove the front bottom cover of tv.Depending on model some have screws along the back side,others have 2 screws on the front at the bottom, usually hidden by plastic disks covering the tops.There are wires attached to the front so carefully remove.should be enough slack to just set aside. There is a small door held on with several screws. remove that and you will see the voltage control. It is a plastic square with 6 knobs. Get a good look at it each tube has 1 focus and 1 screen control you want the screen. sometimes the block is put in upside down so that the right knob will actually be for red, and not blue. slowly turn the control to the left, this will decrease voltage. if you turn too far the set will shut off. if it does just twist knob back the other way and try turning on again. You want to turn just enough to make the lines go away. If they won't go away the tubes are shot. If they do go away it might be only a temp fix, usually tubes cause the problem it's just a question of how bad they are. Good luck!
take the front cover off.two hidden screw at each corner or on the sides .now take off cover in middle of set.two the right you'll find a small box , it will have 3 adjustments on the top and three more at bottom.the bottom ones are your screen controls.the middle is your green and on the right is the one you turn counter clock wise.warning ...turn that control a hair .that will solve the problem
Yes, you are correct on the phrasing. The CRT's were a common issue with these units and all three must be replaced as sooner or later the green will follow the other two CRT's. It was a great model and had a beautiful picture when operating normally. The CRT's are costing about 200 each for rebuild as the green and blue are mostly no longer available. Your repair cost are going to approach $1000.00 or more.
I had the same problem with my sony KP-57ws500 rear projection tv. To solve this problem all you need is a flat and phillips screwdriver. Right below your speakers on the right and left side are tabs. Pull out the tabs and remove the screw on eachside. Once that is done remove the speaker cover and you will see a fiber board cover in the middle of the tv, there will most likley be twist ties holding some wires, to make it easier to work remove the ties. Now remove the screws on the fiber board and pull it off. You should see 3 adjustments on the top for focus, do not touch those. Below the focus adjustments on the bottom is the blue, red, and green adjustments (they should be labled). All you have to do is turn adjustment screw slightly to the left(or counter clockwise) and it should clear right up. I'm not a technician but i read up on it in a repair manual and it worked perfectly and saved me a $100.00 for a service call. It took about 10 minutes to do. I also have a friend who expiernced the same problem with a different model sony projection tv and it worked for his also. Apparently this is a common adjustment that needs to be made espicially if the tv is moved.