Sansui AU 9500

Hi is someone could tell me and or show me maybe with some picture of pièces that can cause my Sansui AU 9500 to play louder on one channel, could it be an capacitor but i don't know how it looks like so maybe with some pictures, and all the pots have been cleaned .This is the same with speekers and headphone . Sorry hope you understand my writing am french thanks.

Did you clean all the switches too?
Did you cycle the controls from stop to stop while wetted with deoxit? At least 50 cycles?

Yes i did it and i can tell you that all the switchs and control has been cleaned complettely, if i can add this, i am sure that something is week because the only way i can ajust both channels evenly is by using my ADC III equalizer, but still it is bothering me since i feel that this amp is not giving is full power capacity , Thanks for replying appreciated, if you have more infos i am listening

channel sounds louder

relay?