Question about Sony KV-35S45 35" TV

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The tv works however the picture dissapears/ flickers off but comes right back immediately...happens constantly

When turning on the picture takes alot longer than before to load..and then constant flickering to black.

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Picture tube ( CRT ) is defective = re-juvenation may help for
a temporary fix...................................T.

Posted on Mar 28, 2008

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TV Flashing from Channel to Channel Non-Stop. Problem with the RCA F32689 32" TV My TV started jumping from channel to channel non-stop. There's no picture or sound - only channel numbers changing...


If still under guarantee take it back.
If not this sounds like a workshop job. If more than five years old (the TV, not you!) and you can afford it, junk this set and get a new one.

Sep 21, 2011 | RCA F32689 32" TV

1 Answer

WHAT WOULD CAUSE THE TV BLINK ON AND OFF ?


The picture tube is right on the edge of working with the set's AKB, or auto cathode balance. All Sony tube TV's use AKB. AKB is a circuit that attempts to compensate for aging of the picture tube (among other things), and if the tube isn't conducting enough (due to age), it will intermittently blank the screen or, in severe cases, not allow the picture to come on at all. But if you are comfortable taking the back off of the set and making a minor adjustment, you can probably restore the picture for a while longer. Take the back off, turn the set on to a blank channel (receiving snow). You will see a large gizmo with a thick red wire coming out of it going up to the glass on the picture tube. That's the high voltage (a.k.a. flyback) transformer. On this transformer will be a small knob labeled "Screen." If you turn this control ever-so-slightly counterclockwise, the screen will blank off immediately. But if you turn it just a bit clockwise, it may fix your problem. Don't go too far with this control, just enough to make it work. This is DANGEROUS FROM HIGH VOLTAGE, so make sure you have a qualified tech help you do this.

Jul 04, 2010 | Sony KV-32S42 32" TV

1 Answer

Picture is flickering then going off


tae your tv to a w/shop tech
your tv has a dry joint or one of the active components is heating up
or a supply is varing

Mar 06, 2009 | Bush 2871NTX 28" TV

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Anyone know why the picture would shake slightly


Does this tv have hdmi input and if so does the problem exist there?
If so I suspect the av input board could have a problem.

Mar 03, 2009 | RCA HD52W58 52" TV

1 Answer

Sony Trinitron KV35V35


Could be a weak Picture tube . You can try turning up the screen control but don't turn it up too much you'll get retrace lines in the picture . Turn it alittle at time until picture comes on then turn it down until the retrace lines go away . Then try turning the tv on and off to make sure it comes back on. Be careful you can get shocked if you do this while it is on and you touch one of the circuits . The control is on the flyback or the module thats on the picture tube it will say screen by it . If this does not work you could have vidoe problems or just the picture is no good . Good luck

Jan 20, 2008 | Sony KV-35V35 TV

1 Answer

Picture flickers off then comes back


I have studied the internet with your problem for about 5 hours and find that 75% vote for replacement rather than repair, but it can be fixed for some time and some for quite some time. I am choosing to replace after I find someone who can walk me through the on-screen diagnosis, (just for fun). Jimmy Wayne

May 25, 2007 | Sony KV-35S45 35" TV

1 Answer

Picture Would Come In and Out, Now Not at All


It seems as though from your description it is just the brightness changing. The Cathode Ray Tube has three electron guns at the back end. These are for green, blue, and red. Each gun has a cathode and a grid. Nearly all control the brightness by having the grids tied to a variable voltage. And nearly all control the colour and luminance by an amplifier connected to each cathode. As you do not say the colours change the the amlifiers are OK. I would suggest the voltage to the grids ( or cathodes in some), is unstable due to a bad connection or a dry joint, or a faulty resistor in that part of the circuit. Very old sets without remote control used a potentiometer to vary the brightness. A voltmeter is all that is needed. When the picture goes off try holding the increase brightness for some time, to see if it reappears.

Oct 28, 2006 | Panasonic CT-36D32 36" TV

1 Answer

TV won't turn on immediately


Right now it should not be expensive to repair,the symptoms point to loose solder conection and it has gradually become worst,if you take the set to the shop it should cost less.What happens is the 10 legs the vertical ic has get overheated and loose,to prove this tap on the side of the set just to see if it reacts,it should also be check for other overheated areas while in service.If the quality of the picture is good then is worh repairing.

Sep 30, 2006 | Toshiba 27A62 27" TV

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