Kindly help, my 2.1 speaker system has a problem, the subwoofer pops up and down when switching on and when changing songs and usually there is resistor that heats up and the TDA 2030A overheats as well. What can be the problem please? Below is the speaker system circuit

 

Probably the TDa amp has blown, that IC is old fashioned now..

 

Probably the TDa amp has blown, that IC is old fashioned now..

Thank you so much sir, so there is nothing else i can do to repair it?

 

The TDA2030 is still available. I designed it into a product that is still on the market.
For example:
http://www.es.co.th/detail.asp?Prod=028200288