Please help with audio problem

rtate · 16th January 2009, 07:02 PM

I am just about finished modding my denon dvd2900 and all was going great..Now I have a problem on the right channel audio.

The music is there but very distorted and very bass heavy.It is also much louder than the left channel which is fine.I have done all the usual things like swapping IC cables switching channels etc..

I have replaced all opamps and signal path resistors as well as all the coupling capacitors around the opamps with polystyrene.

The player was working so I am confident that in instalation was correct.

I have checked all my solder connections and reflowed most.
I think that it is a component problem but I was wondering if my symptoms point to something specific... ie. capacitor, resistor etc..

Any suggestions would be greatly appreciated!!!

guytou · 16th January 2009, 08:31 PM

hi rtate ,

maybe you could have a bad link at the feedback chain of opamps.

rtate · 16th January 2009, 08:34 PM

Thanks for the reply guytou!!

What would I look for to check the feedback links??

guytou · 16th January 2009, 09:29 PM

i am thinking on all components between in and out of opamps. Usually there are feedbacks resistors between in and out

16th January 2009, 07:02 PM	#1
rtate diyAudio Member Join Date: Jan 2002 Location: Burlington, Ontario, Canada	Please help with audio problem I am just about finished modding my denon dvd2900 and all was going great..Now I have a problem on the right channel audio. The music is there but very distorted and very bass heavy.It is also much louder than the left channel which is fine.I have done all the usual things like swapping IC cables switching channels etc.. I have replaced all opamps and signal path resistors as well as all the coupling capacitors around the opamps with polystyrene. The player was working so I am confident that in instalation was correct. I have checked all my solder connections and reflowed most. I think that it is a component problem but I was wondering if my symptoms point to something specific... ie. capacitor, resistor etc.. Any suggestions would be greatly appreciated!!!

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16th January 2009, 08:31 PM	#2
guytou diyAudio Member Join Date: Mar 2005 Location: marseille	hi rtate , maybe you could have a bad link at the feedback chain of opamps.

16th January 2009, 08:34 PM	#3
rtate diyAudio Member Join Date: Jan 2002 Location: Burlington, Ontario, Canada	Thanks for the reply guytou!! What would I look for to check the feedback links??

16th January 2009, 09:29 PM	#4
guytou diyAudio Member Join Date: Mar 2005 Location: marseille	i am thinking on all components between in and out of opamps. Usually there are feedbacks resistors between in and out

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