Question about Sony Televison & Video
I have a Sony Trinitron KV-29XL5 television about 10 yaers old. Lately the indicator light on the front panel has started flashing continuously and after turning on at takes about ten minutes before the picture comes on the screen. The sound is instant. Is this likely to be an expensive repair? Is it worth repairing
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Posted on Nov 01, 2012
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Posted on Jan 02, 2017
If the timer light flashes while waiting for the picture and once the picture appears if it looks like the colors are out of balance and the edges of the picture are out of focus then yes time to let it go. The issue at that point will be the picture tube itself is very weak and would need to be replaced. In most cases the CRT's are no longer available. Please take a few moments to rate my response. Thank you..
Posted on Nov 17, 2009
Testimonial: "Thanks for your advice"
Sure this is tough one as the model is old. But when the red light flashes the set is powering up and the line output transformer is bringing up the voltage to the CRT stages. The time delay is the decay of the voltage to the circuits mainly due to aging of the components--maybe capacitors- or a possible section of the video-Y board having a series of DRY soldering.
Now you can attempt to see to these issue to evaluate.
First of all one you are confirmed that only when the set warms up the picture starts to come in, then we can simulate the fault by using a hair dryer to warm the suspected parts, mainly try on the section of the Y amp IC and the LOT section.
Checck for a faulty 22mfd or 10mfd with 25o volts capacitor on the LOT secondary to the CRT to be faulty, replace.
This can cause delay and poor picture quality.
Also if the contrast section of the Y amp is faulty you may get this faded situation of picture and colour.
Next use a good soldering iron to touch up the soldering of the
Y/C amp. This can be having poor joints and can be a possible suspect too.
The final part can be the picture tube itself but the fading would have very gradual and with a particular tint in domination.
I hope the tips can get you to work and find a solution.
The Tv is a good one and if the set works it can still give more hours of use.
Posted on Aug 31, 2010
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