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As I turn on my 36" Sony Trinitron TV, the picture and sound first come on for the first 5 mins. then the picture slowly shrinks on the top of the screen and then totally disappears leaving the screen black while the sound stays on. What is the problem, Can this be fixed ?

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Yes it can. Sounds like you have cold solder joints on the Vertical Output IC.

Posted on Jan 04, 2011

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I have " Sony FD Trinitron WEGA KV-36HS420 36" TV


U have a soldering iron,desoldering pump or a roll of desoldering braids,a roll of solders?Can u do basic soldering and uderstand basic electronic?FBT- the flyback transformer,the big black block of a plastic with a red wire with a cap hook to a CRT-tv picture tube.Near the big block of a plastic with a red wire with a cap hook to a CRT picture tube.Inside to the right of the FBT,there are 2 power supply ICS,those 2 ICS are dead.Replaced these 2 power supply ICS near the FBT,will solved this tv LED power light indication blinking and will have stable tv power again,and tv will work.

Nov 29, 2010 | Sony FD Trinitron WEGA KV-36HS420 36" TV

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Very slow in turning on, 3-5 min. Then works ok. It is a Sony 36 in trinitron wega


Possible issues in the Power section or the main board . If you can use a hair dyer to heat areas slowly the fault area can be found out easily as the set gets triggered when warm a possible fault in the capacitor of either of these stages.
Be very careful and you will be able to get to the fault as the set is live.
Check for leaked capacitor or smell in this sections.

Aug 31, 2010 | Sony FD Trinitron WEGA KD-36FS130 36" TV

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My Sony Trinitron 36'' model#: kv32v26 is taking a long time to show picture when turned on. The sound comes on and the red light blinks for about 3-5 min. before the picture turns on. And when i switch to...


Hi Matt.
I`ve been repairing sony tv`s for a long time now and i can tell you that what you described is sure signs of a weak picture tube.
And the price of a new picture tube makes it prohibitive to replace it. You could open the set and adjust the screen control on the high voltage transformer but it won`t last long. If you decide to do that , look for a transformer with a long and thick red wire that connects to the back of the picture tube , That is the flyback transformer and there will be two controls on it, you want to adjust the bottom control that is the screen control(the upper one is the focus).
Turn your tv on and slowly turn the screen control up until the picture shows up at a reasonable brightness level, if yout turn it to high or you may get retrace lines in the picture.
That may strech the life of your set for a couple of months .
Hope this will help. Merry Christmas

Dec 16, 2009 | Sony FD Trinitron WEGA KV-36FS120 36" TV

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Sony trinitron wega kv-36fs200 36' tv is missing green color


sounds like a major fault with the line output transformer/power board. if no green on screen, tube is on it's last legs. Advise to scrap, not to repair, cost in excess of £200

Oct 23, 2009 | Televison & Video

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No picture, has sound


This problem usually lies on the horizontal output transistor, try to check also for shorted diode. you can buy ftom any electronic parts dealer or radio shacks stores

Jul 27, 2009 | Sony FD Trinitron WEGA KV-32FS120 32" TV

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Have sony 36 trinitron about 5 years or older..the picture just shakes. never lose the picture or the sound. just cant get it to stop shaking.


U have magnatic degausing coil problem.Take the tv aparts,there a solid back coil all around inside the front frame of ur tv.That the cause,unplug that coil,should not effect the tv pic if have no magnatics problems.

Feb 22, 2009 | Sony FD Trinitron WEGA KV-36FV27 36" TV

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Picture stays on for 3 mins, then slowly disappears


sounds like the filament of the picture tube is losing voltage. normally this would be caused by a bad/broken/cracked solder connection. If this is the problem, it may not be too dificult to fix if you have the soldering skills and know what to look for.

Dec 15, 2008 | Sony FD Trinitron WEGA KV-36FS120 36" TV

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Sony trinitron tv does not turn on


most of that problem is due to defective vertical ic,and your protect system detect that there is a part/s defective.

Nov 01, 2007 | Sony FD Trinitron WEGA KV-36FS120 36" TV

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Sony 36' trinitron no picture but sound


I don't think it's your picture tube, but it may be a problem in your high voltage power supply. If there is no anode voltage then there is no raster (light from the screen) or picture. If it is your high voltage section the you may want to think about taking the set to a shop because of the danger of electrical shock.

Sep 21, 2007 | Sony KV-36XBR400 36" TV

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