tda2030 amp getting noise when connecting pocket tv

ruleworld · 15th August 2007, 09:20 AM

i have a tda2030 amp which runs good with fm radio. it has some noise when i turn the volume low but its acceptable. when i connect a casio pocket tv running on batteries there is no noise. but if i run the tv with 6v adaptor there is big noise. if i connect the tv audio signal to amplifier ground and and tv audio ground to amplifer input then there is much less noise. how can i reduce source noise?

Paswa · 15th August 2007, 04:05 PM

Though I'm not sure, but you may try-

1>try keeping away your adaptor from the amplifier

2> Looks the eliminator/adaptor has poor filtering. Try using a good adaptor. You may use a "LM7806" as a filtering IC

Paswa from INdia

15th August 2007, 09:20 AM	#1
ruleworld diyAudio Member Join Date: Aug 2007	tda2030 amp getting noise when connecting pocket tv i have a tda2030 amp which runs good with fm radio. it has some noise when i turn the volume low but its acceptable. when i connect a casio pocket tv running on batteries there is no noise. but if i run the tv with 6v adaptor there is big noise. if i connect the tv audio signal to amplifier ground and and tv audio ground to amplifer input then there is much less noise. how can i reduce source noise?

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15th August 2007, 04:05 PM	#2
Paswa diyAudio Member Join Date: Aug 2007	Though I'm not sure, but you may try- 1>try keeping away your adaptor from the amplifier 2> Looks the eliminator/adaptor has poor filtering. Try using a good adaptor. You may use a "LM7806" as a filtering IC Paswa from INdia

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