Hello friends Recently I bought second-hand this Sony MHC-GNX80 Mini Component which, when turned on, activates the fan at low intensity and as the volume rises the fan increases the intensity, check filters and resistances but I did not find any anomalies, I don't know if this is normal In this model. On the other hand, when the equipment is turned on, a slight click is heard only on the two front and environmental speakers that is only when turned on, in the subwoofer that click is not heard, but the rest does not hear strange noise and even if I raise the volume like this place music or without it, Otherwise, it responds well at low or high volume and does not even shut down or protect. The repairs I made were: - Cleaning the optical lens of the CD drive - Change of some buttons that were bad - Maintenance to the volume potentiometer - Changing the radio tuner card am fm - Cold reset - Cleaning of cards with clean liquid electronic contacts I appreciate you can help me with this issue

" when turned on, the fan is activated at low intensity and as the volume rises the fan increases the intensity" This is normal, since when the volume is increased, the amplifiers are demanded therefore it needs more ventilation .