Help resurrecting Technics SU-X980D

Hi all left channel blown, suspecting the SVI3204 bad, beginner level here

Have replaced a few smaller caps also one of the main caps was bad, have replaced the 3 chips next to power unit hoping that would fix it but no.
Have seen someone add a separate amp board skipping the svi module and wondering for any advice.
Can't let the whole system down due to the amp it's been a valued companion for years thanks
 
Some photo's
 

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