Question about Sony FD Trinitron WEGA KV-34HS420 34" TV

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Sony tv kv-34hs420 switch it self of.

Tv switchs it self of for about the first hour then when its warmed it works fine if you think its the picture tube its not worth fixing 3 years old.

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  • Sony Master
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Definateley a dry joint if it has to warm up for an hour before it will work properly. If you have no soldering experience at all, then locating the problem will be hard, it may not be worth the time and effort unless you know a friend who can solder and locate any dry joints

regards

Posted on Nov 20, 2008

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  • Master
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The problem is your picture tube is going out on it thats why you have to wait for it to warm up befor it will play right.

Posted on Nov 20, 2008

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  • Master
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I would not say the picture tube is failing on your TV but there might be dry or cold solder joints in the circuitry and that is why it works when warm.
This repair is not a DIY if you do not have any previous electronics or soldering experience.

Posted on Nov 20, 2008

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SONY TV. STANBY TIMER FLASHING


Hi Frank,

Please let me know if it has a pattern of blinks (separated by a pause) or it will flash an exact number of times. Your unit (KV-34HS420) has a built in self diagnostic software that will indicate the probable caused of the fault by flashing of the LED at the front panel.

Jdvillanueva

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hi,
check ur tv for any dry soldering of component leads in the power supply and horizontal output side. also replace the electrolytic capacitor in the B+ supply rail.

u have to check the picture tube base board also for any dry soldering of components, if so the first mentioned complaint ( orange screen) will erase.
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did a quick google got this:

http://www.techlore.com/article/15444/Understanding-Sony-Television-Blinking-Codes/?page=6

blinking is the self diagnosis working.



Aug 27, 2008 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

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Hello there,
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1 Answer

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