http://www.electro-tech-online.com/threads/how-to-check-for-a-blown-fuse-on-board.101910/
https://www.helpowl.com/q/Samsung/HTZ310/Technical-Support/check-fuse-samsung-htz310/956980
http://www.fixya.com/support/t26245501-samsung_ht_z310_home_theatre_left
http://www.electro-tech-online.com/threads/samsung-htz310-receiver-not-powering-up.103781/
https://www.justanswer.com/electronics/3dizh-samsung-ht-z310-quit-working-won-t-turn-respons.html
http://www.fixya.com/support/t5932632-samsung_ht_z310_will_not_power
Should help a bit, August 2017