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Sony Trinitron TV KV21XTR3 Tuning Problems

djoscar_1512
hace 5 años
hace 5 años
hello everyone I need help with a tuning problem with this sony the image looks good and looks rainy and colorless intermittently, the same when you turn it on you see the image immediately but it fades instantly and so it does constantly, it looks good with color immediately looks colorless and somewhat rainy and stays that way all the time ... I appreciate any help, regards
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wilson sepulveda
hace 5 años

Hello friend, rectify welds in the small plate sokets that connects to the synth (trc) check welds and the state of the color amplifier transistors, rgb, as you say the image loses color and sometimes it is black and white, it is not wear of a scope, rather it is a problem to rectify welds, in the chassis, rectify the integrated video, chrome all the coils and what is next to the chroma, and something that does not tell you before is that with a DVD check if it does not happen the same, if the video works well but the cable antenna has the fault,

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djoscar_1512
hace 5 años

Hello everyone, I want to thank you for the help provided, repair tuner welds and the device is working perfectly, again thanks to all and greetings

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Joansoler
Joansoler
Joansoler
47.894
hace 5 años
hace 5 años
The symptom you describe is caused by a malfunction of the multiple unit TUNER / VIF / MTS, the repair procedure is found in this topic: https://yoreparo.com/tv/televisores/tubo/preguntas/1054197/tv-sony-kv-21xtr3- tuner Regards! Joansoler .
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wilson sepulveda
hace 5 años

The most complete solution is that of Mr. Juansoler, excellent, you have to rectify welds in the if unit, intermediate frequency, greetings

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wilson sepulveda
hace 5 años
hace 5 años
If with a DVD or other device it does not present the fault, and with an air or satellite dish yes, we would have to check the channel varicap, first rectify internal welds greetings
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Jeesus Caicedo
hace 5 años

cold welds weld all welds as you can so you spend the tin meter then check the cener diodes and the tuner inside to open if there are welds tlojas is most likely

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