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Noblex TV model 21TC677U with distorted sound

Televisor NOBLEX 21TC677U

Televisor NOBLEX 21TC677U

158 Soluciones
407 Reparaciones
Arce
Arce
Arce
46
hace 5 años
hace 5 años
Hello good afternoon I get this noblex tv with distorted sound, I already changed the integrated LA42205, it arrives 11.7v but still the same and check the speakers and is not a suggestion From already thank you very much
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neg2013
neg2013
neg2013
14.048
hace 5 años

Good evening, these chassis have complex failures in the audio stage, did you renew the capacitors of the voltages that feed at least the audio amplifier IC?

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Arce
Arce
Arce
46
hace 5 años

Change it already the 25vx1000uf capacitor that feeds the ic and remains the same

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neg2013
neg2013
neg2013
14.048
hace 5 años

The chassis of this TV, is the LA8-A is not simple the sound stage, there are more integrated than simply the amplifier IC, and surely more capacitors to review. But when you mention a component, to be more aware of what it does, you must mention its address on the example plate C810

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luis tartaglia
hace 5 años

If you made such changes of capacitors you must be in your technical infirme.

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Arce
Arce
Arce
46
hace 5 años

If it is the chassi LA8 change the C001 .C002 and nothing

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luis tartaglia
hace 5 años

Comment on the tensions of each pin.

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Manual de Servicio Completo.
4.75Mb
luis tartaglia
hace 5 años
hace 5 años
https://html.alldatasheet.com/html-pdf/200190/SANYO/LA42205/462/3/LA42205.html
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Javier Chavez C
hace 5 años
hace 5 años
Diagram here: https://www.yoreparo.com/es/tv/televisores/tubo/preguntas/1522831/necesito-diagrama-tv-noblex-21tc-677u In order to determine if the audio signal is distorted in the amplifier IC or in the previous ones. With an external amplifier, extract signal from the signal input pins (R-IN and L-IN) of the TV audio amplifier. You can use the small external amplifier used in computers or laptops as an audio signal extractor. Block diagram of the audio signal path.
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Arce
Arce
Arce
46
hace 5 años

Hi, thank you all for helping me the flaws was the CI (R2A15908SP) I changed it and walked out
A lot of fat see you soon ...

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Javier Chavez C
hace 5 años

Congratulations.
Until a next opportunity

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